Clarke — The Naples Fauna. 



159 



Tornoceras untangulare, Hall (sp.). 



Figure 15. An early phase of the shell enlarged to show its non-unibilieate 

 condition, x 7. 



From Honeoye lake. 



Figures 16, 17 and 18 are ventral views of ephebic shells of Torn, uniangulare, 

 and its vars. obesum and compressum, in the order named ; showing 

 differences in the thickness of the whorl. The specimen of var. 

 obesum is from Naples, that of var. eompressum from the Styliola 

 limestone on Canandaigua lake, x 2. 



Cyrtoclymenia neapolitana, Clarke. 



Figures 19, 20, 21 and 22. Young shells, showing the strong concave varices 

 of early growth, the otherwise smooth, broad and rounded whorls 

 x 3. 



Figures 23, 21 and 25. The ephebic condition of the shell ; showing the fine 

 striae of the surface, their strongly developed hyponomic curve, the 

 notable lateral depression, ventral ridge and elongate section of the 

 final whorl, x 3. 



From Shurtleff's gully, near Honeoye lake, and various localities 

 in Wyoming county. 



