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NEW YORK STATE MUSEUM 



neanic stage, but apparently the whorls are not in very close con- 

 tact. . . . The type is that figured by Billings, and this had the 

 living chamber free and deviating strongly from the spiral. It was 

 91 mm long on the dorsal surface and more than one half of a 

 volution in length when this measurement was applied to the coil 



Fig. :^4 Aphetoceras farnsworthi Bill, (sp.) Copy of 

 original drawing, xfa 



of the preceding whorls. The siphuncle in the ephebic stage was 

 propioventran and the septa much closer together than is usual in 1 

 this genus. | 



Position and locality. Beekmantown beds at Philipsburg, 

 Missisquoi co. Can. 



