EXPLANATION OF PLATE CI. 



NAUTILUS BRYANI Gabb, p. 818 



1-2. Lateral and ventral views of the type specimen. 

 Vincent own limesand; Vincentown. 



PACHYDISCUS COMPLEXUS (Hall and Meek) ? p. 819. 



3-4. Dorsal and lateral views of a fragment of an internal cast 

 illustrated by Whitfield. 

 Locality unknown. 



BARROISICERAS DENTATO-CARINATUS (Roemer), p. 836 



5-6. Dorsal and lateral views of a fragmentary internal cast illus- 

 trated by Whitfield. 



Locality unknown. 



ioS5 



