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>
    <allimages gaicontinue="Tshubmap200.png" />
  </query-continue>
  <query>
    <pages>
      <page pageid="143" ns="6" title="ファイル:Tarhunta Warpalawas IstArchMu.jpg" imagerepository="local">
        <imageinfo>
          <ii timestamp="2014-05-07T22:07:39Z" user="Bellis" />
        </imageinfo>
      </page>
      <page pageid="85" ns="6" title="ファイル:Temple of Deir Al Bahri Hatshepsut.jpg" imagerepository="local">
        <imageinfo>
          <ii timestamp="2014-04-04T12:32:52Z" user="Bellis" />
        </imageinfo>
      </page>
      <page pageid="97" ns="6" title="ファイル:Tessariamap.png" imagerepository="local">
        <imageinfo>
          <ii timestamp="2014-04-12T12:38:44Z" user="Bellis" />
        </imageinfo>
      </page>
      <page pageid="103" ns="6" title="ファイル:Tomb scene Petit Palais ADUT00355 n2.jpg" imagerepository="local">
        <imageinfo>
          <ii timestamp="2014-04-12T12:44:04Z" user="Bellis" />
        </imageinfo>
      </page>
    </pages>
  </query>
</api>