56 
Plate X 
(Natural size) 
Zemistephanus funteri n. sp, (Page 20.) 
Figure 1. Side view of holotype. National Museum of Canada, Cat. No. 9007. 
Zemistephanus richardsoni (Whiteaves). (Page 19.) 
Figure 2. Ventral view of plesiotype. National Museum of Canada, Cat. No. 9006. 
