diff --git a/reference.htm b/reference.htm
index f8cc269..11b8cef 100644
--- a/reference.htm
+++ b/reference.htm
@@ -103,12 +103,6 @@ Deprecated macros:
 <h3><a name="iterator-concepts">Iterator Concept Checking Classes</a></h3>
 
 <pre>
-  template &lt;class Iter&gt;
-  struct <a href="http://www.sgi.com/tech/stl/trivial.html">TrivialIterator</a>Concept;
-
-  template &lt;class Iter&gt;
-  struct Mutable_TrivialIteratorConcept;
-
   template &lt;class Iter&gt;
   struct <a href="http://www.sgi.com/tech/stl/InputIterator.html">InputIterator</a>Concept; // Standard ref 24.1.1 Table 72