GASTROPODA— LOXONEMATIDJE. 



693 



Schoharie and Onondaga of New York. 



280. L. pexatum Hall. (Fig. 988.) 



More slender than preceding, with deeper sutures, 

 slightly flattened below suture ; striae gently curved. 

 Onondaga of New York and northern Ohio. 



281. L. hamiltoniae Hall. (Fig. 989.) 



Devonic. 

 volutions 



Devonic. 



Fig. 988. Loxonema pexata. (After 

 Hall, Pal. N. Y., V.) 



Fig. 989. Loxone?na hamiltonice. 

 (After Hall, Pal. N. Y., V.) 



Very slender, volutions flattened or slightly concave below, 

 deep sutures, embracing to about one half shoulder width of 

 periphery. Striae strongly marked. 



Hamilton of New York, etc. 

 282. L. delphicola Hall. (Fig. 990.) Devonic. 



Fig. 990. Loxonema delphicola. (After Hall, Pal. N. Y., V.) 



With distinct subsutural band. 



Hamilton of New York, etc. ; Bedford shale of Ohio. 

 283. L. noe Clarke. (Fig. 991.) Devonic. 



Very slender, round-whorled ; concavity of striae in upper third 

 of whorl. 



Portage (Naples) of New York. 



