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>
    <allimages aicontinue="20111121183804|Light_painting3.jpg" />
  </query-continue>
  <query>
    <allimages>
      <img name="Darwin123.jpg" timestamp="2012-06-16T05:30:34Z" user="Volney" url="http://awaretheory.com/wiki/images/4/46/Darwin123.jpg" descriptionurl="http://awaretheory.com/wiki/index.php/File:Darwin123.jpg" ns="6" title="File:Darwin123.jpg" />
      <img name="Digressive_physapaths.png" timestamp="2012-01-20T20:05:35Z" user="Mark" url="http://awaretheory.com/wiki/images/7/7d/Digressive_physapaths.png" descriptionurl="http://awaretheory.com/wiki/index.php/File:Digressive_physapaths.png" ns="6" title="File:Digressive physapaths.png" />
      <img name="Digressive_awarepaths.png" timestamp="2012-01-20T20:04:15Z" user="Mark" url="http://awaretheory.com/wiki/images/d/d6/Digressive_awarepaths.png" descriptionurl="http://awaretheory.com/wiki/index.php/File:Digressive_awarepaths.png" ns="6" title="File:Digressive awarepaths.png" />
      <img name="Identireplicas_evidence_and_arguments_for_types_of_life_after_death_and_immortality2.png" timestamp="2012-01-14T07:30:33Z" user="Mark" url="http://awaretheory.com/wiki/images/9/9f/Identireplicas_evidence_and_arguments_for_types_of_life_after_death_and_immortality2.png" descriptionurl="http://awaretheory.com/wiki/index.php/File:Identireplicas_evidence_and_arguments_for_types_of_life_after_death_and_immortality2.png" ns="6" title="File:Identireplicas evidence and arguments for types of life after death and immortality2.png" />
      <img name="Test_Upload12131323.png" timestamp="2011-12-27T18:59:22Z" user="Mark" url="http://awaretheory.com/wiki/images/f/f1/Test_Upload12131323.png" descriptionurl="http://awaretheory.com/wiki/index.php/File:Test_Upload12131323.png" ns="6" title="File:Test Upload12131323.png" />
      <img name="Light_bulb_shot_through.jpg" timestamp="2011-11-21T18:41:28Z" user="Mark" url="http://awaretheory.com/wiki/images/e/ef/Light_bulb_shot_through.jpg" descriptionurl="http://awaretheory.com/wiki/index.php/File:Light_bulb_shot_through.jpg" ns="6" title="File:Light bulb shot through.jpg" />
      <img name="Neurons_3.jpg" timestamp="2011-11-21T18:40:43Z" user="Mark" url="http://awaretheory.com/wiki/images/e/eb/Neurons_3.jpg" descriptionurl="http://awaretheory.com/wiki/index.php/File:Neurons_3.jpg" ns="6" title="File:Neurons 3.jpg" />
      <img name="Light_painting1.jpg" timestamp="2011-11-21T18:40:01Z" user="Mark" url="http://awaretheory.com/wiki/images/5/59/Light_painting1.jpg" descriptionurl="http://awaretheory.com/wiki/index.php/File:Light_painting1.jpg" ns="6" title="File:Light painting1.jpg" />
      <img name="Trails_light.jpg" timestamp="2011-11-21T18:39:32Z" user="Mark" url="http://awaretheory.com/wiki/images/2/27/Trails_light.jpg" descriptionurl="http://awaretheory.com/wiki/index.php/File:Trails_light.jpg" ns="6" title="File:Trails light.jpg" />
      <img name="Light_painting_i_am.jpg" timestamp="2011-11-21T18:38:43Z" user="Mark" url="http://awaretheory.com/wiki/images/f/f9/Light_painting_i_am.jpg" descriptionurl="http://awaretheory.com/wiki/index.php/File:Light_painting_i_am.jpg" ns="6" title="File:Light painting i am.jpg" />
    </allimages>
  </query>
</api>