35S' DESCBIPTION OF {Tolygasirica. 



EimoTiA Diana. — Striated, linear, rather broader than deep altus) ; 

 dorsum convex ; venter concave ; apices arcuate and slightly rcfllexed. 

 Strife thirteen in 1-1 200th. Length 1-2 16th. Brandenberg. 



E. fieptodon. — Striated, short and semilunar ; venter concave ; dor- 

 sum convex, with seven obtuse dentations (teeth). (l-576th). In 

 fossil meal, Sweden. 



E. ododon. — Like preceding in form and size ; eight dorsal denta- 

 tions. (l-576th.) 



E. enncaodon. — Striated, straight, or curved; venter plane or 

 concave ; dorsum with nine obtuse teeth. (l-432nd.) 



E. <?ec«of?ow.— Semilunar, venter concave, ten obtuse teeth. (1 -480th.) 

 Eossil in Sweden and North America. 



E. Rendecmdon.—Cva~\Q(\., with eleven obtuse teeth. (l-450th.) 

 Fossil. 



E. serrulata. — Linear, cu.rved ; dorsum convex, thirteen obtuse 

 teeth. (l-432nd.) North America. 



E. prionotus. — Striated, almost straight and linear ; fourteen 

 dentations. (1 -289th.) Sweden. 



E. hisoctonaria, — Striated, linear, slightly curved ; sixteen dorsal 

 teeth. (1 -280th.) Fossil. 



E. ieosodon. — Twenty teeth. (l-i06th.) If more than twenty 

 teeth, '^- polyodon. Fossil. 



E. nodosa. — Slightly arched ; expanded at the centre on both sides ; 

 apices reflexed, obtuse. (1 -240th.) Fossil, Barbadoes and North 

 America. 



E. cow^a— Small, curved, rounded at each end ; dorsum regularly 

 convex; striae strong and granular. Length 1-1 152nd. In Greek 

 marl. 



E. Hellenica. — Long, somewhat curved, apices rounded ; dorsum 

 uniformly convex ; very delicate striae, intervening between the few 

 but strong internal costaj. (l-480th) In Greek marl. Costse four 

 in 1-1 200th. 



E. ocellata ■= JEpithemia ocellata (Kiitz.) — Small, oblong, curved ; 

 ends rounded ; back regularly convex ; striae strong and close, seven 

 in 1-1 200th. Length 1-1 152nd. In Greek marl and in Peru. The 

 three preceding species approach E. Faha in form. 



E. amphioxys. — Narrowly linear, dorsums lightly convex, smooth ; 



