diff --git a/lib/register/boot.rb b/lib/register/boot.rb
index a8f9135e..25fa62ab 100644
--- a/lib/register/boot.rb
+++ b/lib/register/boot.rb
@@ -76,6 +76,7 @@ module Register
         @types[name].object_class = cl
         @types[name].instance_methods = object_with_type Parfait::List
         cl.instance_methods = object_with_type Parfait::List
+        cl.instance_names = object_with_type Parfait::List
         #puts "instance_methods is #{cl.instance_methods.class}"
         cl.name = name
         classes[name] = cl
@@ -127,7 +128,7 @@ module Register
           :Frame => {:next_frame => :Frame, :indexed_length => :Integer},
           :Type => {:object_class => :Class, :instance_methods => :List , :indexed_length => :Integer} ,
           :Class => {:instance_methods => :List, :instance_type => :Type, :name => :Word,
-                      :super_class_name => :Word},
+                      :super_class_name => :Word , :instance_names => :List },
           :Dictionary => {:keys => :List , :values => :List  } ,
           :TypedMethod => {:name => :Word, :source => :Object, :instructions => :Object, :binary => :Object,
                       :arguments => :Type , :for_type => :Type, :locals => :Type } ,
diff --git a/lib/typed/parfait/class.rb b/lib/typed/parfait/class.rb
index 5215854b..e67a0669 100644
--- a/lib/typed/parfait/class.rb
+++ b/lib/typed/parfait/class.rb
@@ -16,7 +16,7 @@
 module Parfait
   class Class < Object
     include Behaviour
-    attributes [:instance_type , :name , :super_class_name]
+    attributes [:instance_type , :name , :super_class_name , :instance_names]
 
     def initialize name , superclass
       super()
@@ -26,13 +26,18 @@ module Parfait
       # as an instance. The relation is from an object through the Type to it's class
       # TODO the object type should copy the stuff from superclass
       self.instance_type = Type.new(self)
+      self.instance_names = List.new()
     end
 
     def allocate_object
       #space, and ruby allocate
     end
 
+    def set_instance_names( names )
+      self.instance_names = names
+    end
     def add_instance_name name
+      self.instance_names << name
       self.instance_type.push name
     end