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  <xs:element id="aii_ReinsuranceDisclosuresTable" abstract="true" name="ReinsuranceDisclosuresTable" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType"/>
  <xs:element id="aii_FirstEventMember" abstract="true" name="FirstEventMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aii_SecondEventMember" abstract="true" name="SecondEventMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aii_ReinsuranceDisclosuresLineItems" abstract="true" name="ReinsuranceDisclosuresLineItems" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aii_ReinsurancePremiumCoverage" abstract="false" name="ReinsurancePremiumCoverage" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_ReinsuranceThirdPartyCoverage" abstract="false" name="ReinsuranceThirdPartyCoverage" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_PercentageOfThirdPartyInsuranceCoverage" abstract="false" name="PercentageOfThirdPartyInsuranceCoverage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_ReinsuranceReturnPeriod" abstract="false" name="ReinsuranceReturnPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="aii_ReinsuranceHurricaneSeasonParticipationPercentage" abstract="false" name="ReinsuranceHurricaneSeasonParticipationPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_ReinsuranceAgreementLimit" abstract="false" name="ReinsuranceAgreementLimit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_CatastropheBondLimit" abstract="false" name="CatastropheBondLimit" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_AmountOfCatastropheBonds" abstract="false" name="AmountOfCatastropheBonds" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_ReinsurancePremiumsEarnedExpected" abstract="false" name="ReinsurancePremiumsEarnedExpected" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_ReinsuranceCededProportionalCoveragePercentage" abstract="false" name="ReinsuranceCededProportionalCoveragePercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_ReinsuranceLossCoverageNetOfReinsuranceCoveragesMaximumPercentageOfNetCededPremiumsEarned" abstract="false" name="ReinsuranceLossCoverageNetOfReinsuranceCoveragesMaximumPercentageOfNetCededPremiumsEarned" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_ReinsuranceNetLiabilityOnCatastropheLossesMaximumPercentageOfGrossEarnedPremiumNetOfInuringReinsurancePremium" abstract="false" name="ReinsuranceNetLiabilityOnCatastropheLossesMaximumPercentageOfGrossEarnedPremiumNetOfInuringReinsurancePremium" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_ReinsuranceCededPremiumsMaximumInuringReinsuranceCoveragePercentageOfGrossEarnedPremiums" abstract="false" name="ReinsuranceCededPremiumsMaximumInuringReinsuranceCoveragePercentageOfGrossEarnedPremiums" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_ReinsuranceCededCommissionRate" abstract="false" name="ReinsuranceCededCommissionRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_ReinsuranceContractsRecoveriesReceived" abstract="false" name="ReinsuranceContractsRecoveriesReceived" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_PremiumsEarnedGross" abstract="false" name="PremiumsEarnedGross" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_ReinsuranceLossesAndLossAdjustmentExpensesIncurredClaims" abstract="false" name="ReinsuranceLossesAndLossAdjustmentExpensesIncurredClaims" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_CededPolicyAcquisitionExpenses" abstract="false" name="CededPolicyAcquisitionExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_PremiumsWrittenToSurplusRatioGross" abstract="false" name="PremiumsWrittenToSurplusRatioGross" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="aii_PremiumsWrittenToSurplusRatioNet" abstract="false" name="PremiumsWrittenToSurplusRatioNet" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="aii_CatstyleStatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired" abstract="false" name="CatstyleStatutoryAccountingPracticesStatutoryCapitalAndSurplusRequired" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_StatutoryAccountingPracticesStatutoryCapitalAndSurplusActual" abstract="false" name="StatutoryAccountingPracticesStatutoryCapitalAndSurplusActual" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_AgreementTerminationExpenses" abstract="false" name="AgreementTerminationExpenses" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="aii_RestrictedStockUnitsRSUsTimeBasedMember" abstract="true" name="RestrictedStockUnitsRSUsTimeBasedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aii_PerformanceStockUnitsPSUsMember" abstract="true" name="PerformanceStockUnitsPSUsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aii_RestrictedStockUnitsAndPerformanceStockUnitsMember" abstract="true" name="RestrictedStockUnitsAndPerformanceStockUnitsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="aii_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesModified" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesModified" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="aii_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWithheldForTaxes" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWithheldForTaxes" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="aii_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWithheldForTaxesWeightedAverageGrantDateFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWithheldForTaxesWeightedAverageGrantDateFairValue" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:perShareItemType"/>
  <xs:element id="aii_EffectiveIncomeTaxRateReconciliationReductionTaxExemptIncomeNontaxableEntityActivityPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationReductionTaxExemptIncomeNontaxableEntityActivityPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_EffectiveIncomeTaxRateReconciliationReductionChangeInTaxExemptIncomeNontaxableEntityActivityPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationReductionChangeInTaxExemptIncomeNontaxableEntityActivityPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="aii_OperatingLeaseAssetsAndLiabilitiesLesseeAbstract" abstract="true" name="OperatingLeaseAssetsAndLiabilitiesLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aii_WeightedAverageRemainingLeaseTermAbstract" abstract="true" name="WeightedAverageRemainingLeaseTermAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aii_WeightedAverageDiscountRateAbstract" abstract="true" name="WeightedAverageDiscountRateAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aii_CashFlowLesseeAbstract" abstract="true" name="CashFlowLesseeAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="aii_LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidDueAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
