Plate I. 



Fig. 1. PerispMnctes (Proceritcs) Matsuslrimai n. sp. 



Figs. 2, 3. PerispMnctes (Grossouvria) Hikii n. sp. 



Fig. 4. PerispMnctes (Biplices) Icaizaranus n. sp. 4a transverse section of 



a whorl. 

 Fig. 5. PerispMnctes (Biplices ?) KocMhei n. sp. 

 Fig. 6. PerispMnctes (Ataxioceras) sp. 

 Fig. 7. Oppelia ecMzenica n. sp. 7« transverse section of a whorl. 



