PLATE 61. 



Fig. 1. 653. 1. GoMPHocERAs? (Pag. 290.) 



1 o. A young individual niucli compressed, in the sliale. 



1 6. A larger individual from the limestone. 



Fig. 2. 654. S. Cyrtoceras? canceli.atum. ( Pag. 290.) 



2 a. A fragment in shale, which is entirely compressed. The shell is retained on the larger part of the sur. 



face, and, where exfoliated, the surface is marked by longitiulinal stria;. 

 2 A. A fragment of a similarly marked specimen from limestone. 

 2 c. Section of the same, showing the dorsal position of the siphuncle. 



Fig. 3. 655. 32. Orthoceras — (Species vndcler mined). (Pag. 291.) 



Fig. 4. 656. 33. Orthoceras imbkicatum? (Pag. 291.) 



4 a, 6, c. Fragments of small individnals of this species. 



