PLATE 81. 



Fig. 1. 707. 1. Megalomtjs canadensis. (Pag. 343.) 



1 a. Cast of a large individual, presenting the ordinary characters of specimens when not distorted. 



1 b. A cast of a much shorter specimen : probably the form is in part due to pressure on the posterior end. 



1 c. View of the anterior extremity of the specimen 1 6. 



1 d. Dorsal view of the same. 



1 e. A cast of a specimen somewhat distorted by pressure, which has projected the lower anterior end beyond 



the beaks above. 

 1 /. View of the anterior end of the specimen fig. 1 e. 



