You are looking at the HTML representation of the XML format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the XML format, set format=xml.
See the complete documentation, or API help for more information. 
<?xml version="1.0"?>
<api query-continue-offset="6">
  <query serializer="SMW\Serializers\QueryResultSerializer" version="0.11">
    <printrequests>
      <printrequest label="" key="" redi="" typeid="_wpg" mode="2" />
    </printrequests>
    <results>
      <subject fulltext="File:. Chatangiella.jpg" fullurl="http://dinoflaj.smu.ca/dinoflaj3/index.php/File:._Chatangiella.jpg" namespace="6" exists="1" displaytitle="">
        <printouts />
      </subject>
      <subject fulltext="File:. Xanthidium from Ehrenberg1837b orig.jpg" fullurl="http://dinoflaj.smu.ca/dinoflaj3/index.php/File:._Xanthidium_from_Ehrenberg1837b_orig.jpg" namespace="6" exists="1" displaytitle="">
        <printouts />
      </subject>
      <subject fulltext="File:. Xanthidium from Ehrenberg1837b.jpg" fullurl="http://dinoflaj.smu.ca/dinoflaj3/index.php/File:._Xanthidium_from_Ehrenberg1837b.jpg" namespace="6" exists="1" displaytitle="">
        <printouts />
      </subject>
      <subject fulltext="File:. dinoflaj logo 32x32.gif" fullurl="http://dinoflaj.smu.ca/dinoflaj3/index.php/File:._dinoflaj_logo_32x32.gif" namespace="6" exists="1" displaytitle="">
        <printouts />
      </subject>
      <subject fulltext="File:. dinoflaj logo 64x64.gif" fullurl="http://dinoflaj.smu.ca/dinoflaj3/index.php/File:._dinoflaj_logo_64x64.gif" namespace="6" exists="1" displaytitle="">
        <printouts />
      </subject>
    </results>
    <meta hash="cb69f7677f6234d18b27415cf587ccb1" count="5" offset="1" source="" time="0.096986" />
  </query>
</api>