142 
Plate XVIII 
(Specimens are of natural size, unless otherwise stated) 
Scaphitcs v entricosus var. saxitonianus McLearn n. var. (Page 77.) 
Figure 1 . Suture-line of holotype. Nat. Mus. Canada, Cat. No. 9041. 
Figure 3. Side view of same specimen. 
Figure 3. Ventral view of same specimen. 
