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  <xsd:element abstract="true" id="ipcc_A12MonthsormoreMember" name="A12MonthsormoreMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_AccumulatedNetUnrealizedGainLossAndOtherThanTemporaryImpairmentMember" name="AccumulatedNetUnrealizedGainLossAndOtherThanTemporaryImpairmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableForSaleEquitySecurities" name="AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableForSaleEquitySecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableForSaleSecurities" name="AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableForSaleSecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AccumulatedOtherComprehensiveIncomeLossTax" name="AccumulatedOtherComprehensiveIncomeLossTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ipcc_AgeOfUnrealizedLossAxis" name="AgeOfUnrealizedLossAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_AgeOfUnrealizedLossDomain" name="AgeOfUnrealizedLossDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesAndCashAndCashEquivalentsFairValueDisclosure" name="AvailableForSaleSecuritiesAndCashAndCashEquivalentsFairValueDisclosure" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTaxExcludingOtherThanTemporaryImpairmentPortion" name="AvailableForSaleSecuritiesChangeInNetUnrealizedHoldingGainLossNetOfTaxExcludingOtherThanTemporaryImpairmentPortion" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairmentsNetOfTax" name="AvailableForSaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairmentsNetOfTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairmentsTax" name="AvailableForSaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairmentsTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesInUnrealizedGainPositionsQualitativeDisclosureNumberOfPositions" name="AvailableForSaleSecuritiesInUnrealizedGainPositionsQualitativeDisclosureNumberOfPositions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesInUnrealizedGainPositionsQualitativeDisclosureNumberOfPositionsWithUnrealizedGainsOverFiveHundredThousandDollars" name="AvailableForSaleSecuritiesInUnrealizedGainPositionsQualitativeDisclosureNumberOfPositionsWithUnrealizedGainsOverFiveHundredThousandDollars" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesInUnrealizedGainPositionsQualitativeDisclosurePercentageOfFairValueHeldThatWereInvestmentGradePositions" name="AvailableForSaleSecuritiesInUnrealizedGainPositionsQualitativeDisclosurePercentageOfFairValueHeldThatWereInvestmentGradePositions" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesInUnrealizedGainPositionsQualitativeDisclosurePercentageOfPositionsThatWereInvestmentGrade" name="AvailableForSaleSecuritiesInUnrealizedGainPositionsQualitativeDisclosurePercentageOfPositionsThatWereInvestmentGrade" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsWithUnrealizedLossesOverFiveHundredThousandDollars" name="AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosureNumberOfPositionsWithUnrealizedLossesOverFiveHundredThousandDollars" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosurePercentageOfFairValueHeldThatWereInvestmentGradePositions" name="AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosurePercentageOfFairValueHeldThatWereInvestmentGradePositions" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosurePercentageOfPositionsThatWereInvestmentGrade" name="AvailableForSaleSecuritiesInUnrealizedLossPositionsQualitativeDisclosurePercentageOfPositionsThatWereInvestmentGrade" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesNumberOfPositions" name="AvailableForSaleSecuritiesNumberOfPositions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="ipcc_AvailableForSaleSecuritiesNumberOfPricesProvidedByUnaffiliatedMoneyManagers" name="AvailableForSaleSecuritiesNumberOfPricesProvidedByUnaffiliatedMoneyManagers" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_AvailableforsaleSecuritiesAmortizedCostBasisShortterm" name="AvailableforsaleSecuritiesAmortizedCostBasisShortterm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ipcc_AvailableforsaleSecuritiesFairValuetoAmortizedCostBasisAbstractAbstract" name="AvailableforsaleSecuritiesFairValuetoAmortizedCostBasisAbstractAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_AvailableforsaleSecuritiesNumberofSecuritiesForWhichPriceCouldNotBeDeterminedUsingObservableMarketableInputs" name="AvailableforsaleSecuritiesNumberofSecuritiesForWhichPriceCouldNotBeDeterminedUsingObservableMarketableInputs" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ipcc_BetweenFivePercentAndTenPercentAsPercentageOfAmortizedCostOrCostMember" name="BetweenFivePercentAndTenPercentAsPercentageOfAmortizedCostOrCostMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_CapitalLeaseInterestPaid" name="CapitalLeaseInterestPaid" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_CommissionsAndOtherUnderwritingExpenses" name="CommissionsAndOtherUnderwritingExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_CommonStockDividendsCashPaidPercentageChange" name="CommonStockDividendsCashPaidPercentageChange" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_DocumentInformationAbstract" name="DocumentInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_EarningsBasicPercentageChange" name="EarningsBasicPercentageChange" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_EarningsDilutedPercentageChange" name="EarningsDilutedPercentageChange" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_FairValueDebtInstrumentValuationBasisUSTreasuryNoteRateTermofNoteUsed" name="FairValueDebtInstrumentValuationBasisUSTreasuryNoteRateTermofNoteUsed" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_FairValueDisclosurePercentage" name="FairValueDisclosurePercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ipcc_GreaterThanTenPercentAsPercentageOfAmortizedCostOrCostMember" name="GreaterThanTenPercentAsPercentageOfAmortizedCostOrCostMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_GreaterThanTwelveMonthsMember" name="GreaterThanTwelveMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInAvaiableForSaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments" name="IncreaseDecreaseInAvaiableForSaleSecuritiesGrossRealizedGainLossExcludingOtherThanTemporaryImpairments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInBenefitsLossesAndExpenses" name="IncreaseDecreaseInBenefitsLossesAndExpenses" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInCommissionsAndOtherUnderwritingExpenses" name="IncreaseDecreaseInCommissionsAndOtherUnderwritingExpenses" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInGeneralAndAdministrativeExpense" name="IncreaseDecreaseInGeneralAndAdministrativeExpense" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInImpairmentLossesInvestmentAvailableForSaleSecurities" name="IncreaseDecreaseInImpairmentLossesInvestmentAvailableForSaleSecurities" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInIncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndInomeLossFromEquityMethodInvestments" name="IncreaseDecreaseInIncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndInomeLossFromEquityMethodInvestments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInIncomeTaxExpenseBenefit" name="IncreaseDecreaseInIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInIncurredClaimsPropertyCasualtyAndLiability" name="IncreaseDecreaseInIncurredClaimsPropertyCasualtyAndLiability" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInInterestExpense" name="IncreaseDecreaseInInterestExpense" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInNetIncomeLoss" name="IncreaseDecreaseInNetIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInNetInvestmentIncome" name="IncreaseDecreaseInNetInvestmentIncome" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInOtherCostAndExpenseOperating" name="IncreaseDecreaseInOtherCostAndExpenseOperating" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInOtherIncome" name="IncreaseDecreaseInOtherIncome" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInPremiumsEarnedNetPropertyAndCasualty" name="IncreaseDecreaseInPremiumsEarnedNetPropertyAndCasualty" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInRevenues" name="IncreaseDecreaseInRevenues" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInWeightedAverageNumberOfDilutedSharesOutstanding" name="IncreaseDecreaseInWeightedAverageNumberOfDilutedSharesOutstanding" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInWeightedAverageNumberOfSharesOutstandingBasic" name="IncreaseDecreaseInWeightedAverageNumberOfSharesOutstandingBasic" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseInstallmentandOtherFeeIncome" name="IncreaseDecreaseInstallmentandOtherFeeIncome" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_IncreaseDecreaseRealizedInvestmentGainsLosses" name="IncreaseDecreaseRealizedInvestmentGainsLosses" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_InvestmentsByUnrealizedGainOrLossPositionAxis" name="InvestmentsByUnrealizedGainOrLossPositionAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_InvestmentsByUnrealizedGainOrLossPositionDomain" name="InvestmentsByUnrealizedGainOrLossPositionDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_Ipcc_InstallmentandOtherFeeIncome" name="Ipcc_InstallmentandOtherFeeIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_LessThanFivePercentAsPercentageOfAmortizedCostOrCostMember" name="LessThanFivePercentAsPercentageOfAmortizedCostOrCostMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_LessThanTwelveMonthsMember" name="LessThanTwelveMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_LiabilityForClaimsAdjustmentExpensePropertyAndCasualtyAmount" name="LiabilityForClaimsAdjustmentExpensePropertyAndCasualtyAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_LiabilityForClaimsAndClaimsAdjustmentExpenseExcludingReinsuranceRecoverablesPropertyCasualtyLiability" name="LiabilityForClaimsAndClaimsAdjustmentExpenseExcludingReinsuranceRecoverablesPropertyCasualtyLiability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_LiabilityForUnpaidClaimsIncurredButNotReportedClaimsIbnrPropertyAndCasualtyAmount" name="LiabilityForUnpaidClaimsIncurredButNotReportedClaimsIbnrPropertyAndCasualtyAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_LiabilityForUnpaidClaimsReportedClaimsPropertyAndCasualtyAmount" name="LiabilityForUnpaidClaimsReportedClaimsPropertyAndCasualtyAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_LineofCreditFacilityTerm" name="LineofCreditFacilityTerm" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_NineToTwelveMonthsMember" name="NineToTwelveMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_NonBindingBrokerQuotesMember" name="NonBindingBrokerQuotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_NonCashActivityRelatedtoRabbiTrust1" name="NonCashActivityRelatedtoRabbiTrust1" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_NonCreditPortionOfOtherThanTemporaryImpairmentsRecognizedInOtherComprehensiveIncome" name="NonCreditPortionOfOtherThanTemporaryImpairmentsRecognizedInOtherComprehensiveIncome" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableForSaleSecuritiesNetOfTax" name="OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNetAvailableForSaleSecuritiesNetOfTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_OtherthanTemporaryImpairmentLossesInvestmentsPortionRecognizedinEarningsNetAvailableforsaleSecuritiesTax" name="OtherthanTemporaryImpairmentLossesInvestmentsPortionRecognizedinEarningsNetAvailableforsaleSecuritiesTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_OutstandingChecks" name="OutstandingChecks" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_PayableForInvestmentsPurchased" name="PayableForInvestmentsPurchased" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_ReceivableForInvestmentsSold" name="ReceivableForInvestmentsSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_ReceivableforSecuritiesSold" name="ReceivableforSecuritiesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_ReclassicificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax" name="ReclassicificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_ReclassicificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" name="ReclassicificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_ReclassicificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodTax" name="ReclassicificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_ReinsuranceRecoverablesExcludingPaidLossesRecoverables" name="ReinsuranceRecoverablesExcludingPaidLossesRecoverables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="ipcc_ScheduleOfChangesInUnrealizedGainsLossesOnInvestmentsTableTextBlock" name="ScheduleOfChangesInUnrealizedGainsLossesOnInvestmentsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_SecuritiesWithNoUnrealizedGainsOrLossesMember" name="SecuritiesWithNoUnrealizedGainsOrLossesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_SecuritiesWithUnrealizedGainsMember" name="SecuritiesWithUnrealizedGainsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_SecuritiesWithUnrealizedLossesMember" name="SecuritiesWithUnrealizedLossesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_SeniorNotesDue2022Member" name="SeniorNotesDue2022Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_SeverityOfUnrealizedLossAxis" name="SeverityOfUnrealizedLossAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_SeverityOfUnrealizedLossDomain" name="SeverityOfUnrealizedLossDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_SixToNineMonthsMember" name="SixToNineMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_StockIssuedDuringPeriodValue" name="StockIssuedDuringPeriodValue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_SummaryOfUnrealizedGainsAndLossesOnInvestmentsTableTextBlock" name="SummaryOfUnrealizedGainsAndLossesOnInvestmentsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="ipcc_ThreeToSixMonthsMember" name="ThreeToSixMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_ThresholdForImpairmentEvaluationPercentageOfBookValue" name="ThresholdForImpairmentEvaluationPercentageOfBookValue" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_ThresholdForImpairmentEvaluationUnrealizedLossAmount" name="ThresholdForImpairmentEvaluationUnrealizedLossAmount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="ipcc_UnrealizedLossOnInvestmentsByAgeAndSeverityTableTextBlock" name="UnrealizedLossOnInvestmentsByAgeAndSeverityTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="ipcc_UnrealizedLossesAsPercentageOfCost" name="UnrealizedLossesAsPercentageOfCost" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="ipcc_ZeroToThreeMonthsMember" name="ZeroToThreeMonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>


