62 
Plate XIII 
(Natural size) 
Defonticeras maudense n. sp. (Page 14.) 
Figure 1. Suture line of holotype. National Museum, of Canada, Cat. No. 9010. 
Defonticeras ellsi n. sp. (Page 16.) 
Figure 2. Side view of holotype. National Museum of Canada, Cat. No. 9013. 
Figure 3. Oblique view, same specimen. 
Defonticeras colnetti n. sp. (Page 15.) 
Figure 4. Side view of holotype. National Museum of Canada, Cat. No. 9012. 
Figure 5. Oblique view, same specimen. 
