64 
Plate XIY 
(Natural size) 
Defonticeras ellsi n. sp. (Page 16.) 
Figure 1. Ventral view of holotype. National Museum of Canada, Cat. No. 9013. 
Defonticeras maudense n. sp. (Page 14.) 
Figure 2. Ventral view of holotype. National Museum of Canada, Cat. No. 9010. 
Figure 3. Side view, same specimen. 
