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="Bastian_Fray" />
  </query-continue>
  <query>
    <pages>
      <page ns="0" title="Babe Adroxis" missing="" />
      <page ns="0" title="Bae Fescue" missing="" />
      <page ns="0" title="Bailey Truus" missing="" />
      <page ns="0" title="Bailey Vocatus" missing="" />
      <page ns="0" title="Barbie Hyatt" missing="" />
      <page ns="0" title="Barnabas Stroud" missing="" />
      <page ns="0" title="Basil Anatola" missing="" />
      <page ns="0" title="Basil Antola" missing="" />
      <page ns="0" title="Basil Baptiste" missing="" />
      <page ns="0" title="Basil Isley" missing="" />
    </pages>
  </query>
</api>