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>
    <querypage qpoffset="10" />
  </query-continue>
  <query>
    <querypage name="Ancientpages">
      <results>
        <page value="20141218112500" timestamp="2014-12-18T11:25:00Z" ns="0" title="ジュエリー・アクセサリー" />
        <page value="20141218112930" timestamp="2014-12-18T11:29:30Z" ns="0" title="メガネ・サングラス" />
        <page value="20141218113056" timestamp="2014-12-18T11:30:56Z" ns="0" title="カラコン" />
        <page value="20141218113434" timestamp="2014-12-18T11:34:34Z" ns="0" title="パソコン・周辺機器" />
        <page value="20141219094826" timestamp="2014-12-19T09:48:26Z" ns="0" title="プロバイダ・モバイル通信" />
        <page value="20141219095103" timestamp="2014-12-19T09:51:03Z" ns="0" title="生活家電" />
        <page value="20141219095314" timestamp="2014-12-19T09:53:14Z" ns="0" title="カメラ・デジタルカメラ" />
        <page value="20141219095543" timestamp="2014-12-19T09:55:43Z" ns="0" title="テレビ・レコーダー・オーディオ" />
        <page value="20141220115711" timestamp="2014-12-20T11:57:11Z" ns="0" title="アンティーク時計の販売" />
        <page value="20141220123752" timestamp="2014-12-20T12:37:52Z" ns="0" title="アイスウォッチ" />
      </results>
    </querypage>
  </query>
</api>