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  <xs:element name="NumberOfClassesOfCommonStockIssuedAndOutstanding" id="kos_NumberOfClassesOfCommonStockIssuedAndOutstanding" type="xbrli:integerItemType" substitutionGroup="xbrli:item" nillable="true" xbrli:periodType="instant" />
  <xs:element name="NetIncomeLossAvailableToCommonStockholdersBasicAndDilutedAbstract" id="kos_NetIncomeLossAvailableToCommonStockholdersBasicAndDilutedAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" abstract="true" nillable="true" xbrli:periodType="duration" />
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</xs:schema>