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>
    <alllinks galcontinue="Elwyn_Meader|269" />
  </query-continue>
  <query>
    <pages>
      <page pageid="34" ns="0" title="Tobacco Worm" />
      <page pageid="54" ns="0" title="Blue Jay" />
      <page pageid="93" ns="0" title="Kishwaukee Yellow" />
      <page pageid="122" ns="0" title="Dixie Speckled Butterpea" />
      <page pageid="151" ns="0" title="Treaty Bean" />
      <page pageid="153" ns="0" title="Buff Valentine" />
      <page pageid="155" ns="0" title="Early Contender" />
      <page pageid="241" ns="0" title="Hei Mei Tou" />
      <page pageid="264" ns="0" title="Dixie White Butterpea" />
    </pages>
  </query>
</api>