Undefined object in hook_menu definition

In the menu definition for deleting a key:

  $items['admin/build/services/keys/%/delete'] = array(
    'title'             => $type->name,
    'access arguments'  => array('administer services'),
    'page callback'     => 'drupal_get_form',
    'page arguments'    => array('services_admin_keys_delete_confirm'),
    'file'              => 'services_admin_keys.inc',
    'type'              => MENU_CALLBACK,
  );

The $type object is undefined. Not sure what should be in there, in 5.x it was blank.