Phragmostoma diopetes Clarke 



Page 70 



9 The thickened tabular callus on the inner lip of the shell, x 2 

 10 The exterior of an incomplete example, x 2 



1 1 A view showing the general aspect of the stoma and its calloused lip 

 12, 13 Small examples of this species 

 Locality. Matagamon lake 



Cyrtolites expansus Hall 



Page 6g 



14, 15 Profile and dorsal views of a characteristic example 

 16 A smaller specimen 



Locality. Cunningham's camp near Matagamon lake 



Plectonotus derbyi Clarke 



{See plate 24) 

 Page 69 



17-19 Views of the usual expression of this shell 



Locality. Matagamon lake and Cunningham's camp 



Tropidodiscus cf. obex Clarke 



{.SV(- plate 22) 

 Page 69 



20, 21 Profile and dorsal views of a specimen referred to this species 

 Local it v. Matagamon lake dam 



Platyceras cf. calantica Hall and hebes Clarke 



(See plate 22) 

 Tage 68 



22, 23 Two views of the same specimen 



Locality. Cunningham's camp near Matagamon lake 



Cornulites sp. 



Page 67 



24 A large tube overgrown with an auloporoid coral 

 Locality. Near Blind Cove point, Telos lake 



191 



