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  <xsd:element abstract="true" id="dx_InterestRateSwapAgreementsMaturitiesinNext3748MonthsMember" name="InterestRateSwapAgreementsMaturitiesinNext3748MonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_InterestRateSwapAgreementsMaturitiesinNext4960MonthsMember" name="InterestRateSwapAgreementsMaturitiesinNext4960MonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_InterestRateSwapAgreementsMaturitiesinNext6172MonthsMember" name="InterestRateSwapAgreementsMaturitiesinNext6172MonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_InterestRateSwapAgreementsMaturitiesinNext7384MonthsMember" name="InterestRateSwapAgreementsMaturitiesinNext7384MonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_InterestRateSwapAgreementsMaturitiesinNext8596MonthsMember" name="InterestRateSwapAgreementsMaturitiesinNext8596MonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_InterestRateSwapAgreementsMaturitiesinNext97108MonthsMember" name="InterestRateSwapAgreementsMaturitiesinNext97108MonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dx_InvestmentsUnamortizedPremiumDiscount" name="InvestmentsUnamortizedPremiumDiscount" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="dx_InvestmentsWeightedAverageCouponRate" name="InvestmentsWeightedAverageCouponRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="dx_Lessthan30daysMember" name="Lessthan30daysMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="dx_NotionalAmountofDerivativeInstrumentsAdded" name="NotionalAmountofDerivativeInstrumentsAdded" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="dx_NotionalAmountofDerivativeInstrumentsTerminated" name="NotionalAmountofDerivativeInstrumentsTerminated" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:periodType="duration" />
  <xsd:element id="dx_Notionalbalanceforinterestonlysecurities" name="Notionalbalanceforinterestonlysecurities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="dx_NumberOfCounterpartiesBorrowingAvailability" name="NumberOfCounterpartiesBorrowingAvailability" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="dx_NumberOfCounterpartiesBorrowingsOutstanding" name="NumberOfCounterpartiesBorrowingsOutstanding" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="dx_OffsettingAssetsAbstract" name="OffsettingAssetsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_OffsettingAssetsandLiabilitiesAbstract" name="OffsettingAssetsandLiabilitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_OffsettingLiabilitiesAbstract" name="OffsettingLiabilitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_OnetotwoyearsMember" name="OnetotwoyearsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_ScheduleOfAmortizationRemainingAxis" name="ScheduleOfAmortizationRemainingAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_ScheduleOfAmortizationRemainingDomain" name="ScheduleOfAmortizationRemainingDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_StatementofShareholdersEquityAbstract" name="StatementofShareholdersEquityAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="dx_StockIssuedDuringPeriodRemainingSharesAvailableDividendReinvestmentPlan" name="StockIssuedDuringPeriodRemainingSharesAvailableDividendReinvestmentPlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="dx_ThreeToFourYearsMember" name="ThreeToFourYearsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_TwoToThreeYearsMember" name="TwoToThreeYearsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="dx_WithintwelvemonthsMember" name="WithintwelvemonthsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
</xsd:schema>
