CEPHALOPODA— CYRTOCHOANITES. 



162. C.(?) brevicorne (Hall). (Fig. 1361.) Silurlc. 



Small, rapidly expanding, strongly curved ; septa shallow, siphun- 



FiG. 1359- Cyclostoniiceras orodes. 

 showing camerse. (After Whiteaves, 

 Pal. Foss., III.) 



Fig. 1360. Cyclostojniceras orodes, 

 section. (After Whiteaves, Pal, Foss., 

 III.) 



cle ventral, small; section oval, more broadly curving on ventral 

 than on dorsal side. 



Racine and Guelph of Wisconsin; Guelph of New York. 



Fig. 1361. Cyclostoniiceras brevi- 

 corne, X Vz- (After Hall, 20th Mus. 

 Rep.) 



Fig. 1362. Cyclostomiceras creta- 

 ceum^XYz- (After Whitfield.) 



