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="かき消されるＢ：ヒエログリフ|406" />
  </query-continue>
  <query>
    <pages>
      <page pageid="5" ns="0" title="神話的考察" />
      <page pageid="37" ns="0" title="神に礼拝する王" />
      <page pageid="66" ns="0" title="省略されるw：ヒエログリフ" />
      <page pageid="366" ns="0" title="地平線の太陽：ヒエログリフ" />
      <page pageid="393" ns="0" title="失われたArk２：ヒエログリフ" />
      <page pageid="406" ns="0" title="我が名はホークアイ：ヒエログリフ" />
    </pages>
  </query>
</api>