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="20090707124345" timestamp="2009-07-07T12:43:45Z" ns="0" title="CD para remoção de Vírus" />
        <page value="20090710184835" timestamp="2009-07-10T18:48:35Z" ns="0" title="VirtualBox" />
        <page value="20090903145358" timestamp="2009-09-03T14:53:58Z" ns="0" title="Disklist Atual" />
        <page value="20091117183733" timestamp="2009-11-17T18:37:33Z" ns="0" title="Bridges" />
        <page value="20091117185758" timestamp="2009-11-17T18:57:58Z" ns="0" title="Mapa da rede" />
        <page value="20091118144743" timestamp="2009-11-18T14:47:43Z" ns="0" title="Novos Projetos e Tarefas" />
        <page value="20091126161538" timestamp="2009-11-26T16:15:38Z" ns="0" title="Cópia do Arquivo de Configurção" />
        <page value="20091126165924" timestamp="2009-11-26T16:59:24Z" ns="0" title="Cópia do Script regras por ip.sh" />
        <page value="20091202183453" timestamp="2009-12-02T18:34:53Z" ns="0" title="Cópia do script de QoS" />
        <page value="20100416195915" timestamp="2010-04-16T19:59:15Z" ns="0" title="Novos Projetos e Tarefas - 2010-1" />
      </results>
    </querypage>
  </query>
</api>