Doll a)id BartscJi — The Pijramidellidm. 



Aperture subquaclrate 



Sect. Eulimella Fbs, ss. 

 Aperture suboval 



Cu^smannica sect. nov. 



Type, PyramideUa dundestina Desh. 



A 3 Columellar fold one 

 Shell umbllicated 



Surface polished, or with fine lines of growth and microscopic 

 spiral striations 



Peripheral svilcus absent 



Svibg. Orinella nom. nov. 



Type, Ori/ta pinguicuk'i A. Ads. 



Peripheral sulcus present 



Sulcorinella subg. nov. 

 Type, Fyvamidella {Sulcorinella) dodona, 



sp. nov. 



Shell not umbllicated 



liarge, heavy, elongated shells 

 Surface spirally Urate 



Subg. Actaeopyramis Fischer, 1885. 

 Type, Munoptygma striata Graj'. 



Slender, medium sized shells 



Surface polished, marked by fine lines of growth and mi- 

 croscopic spiral striations 

 Postnuclear whorls increasing slowly in size at first, 

 then rapidly, lendingtheshella mucronate appearance 

 Subg. Styloptygma A. Adams, 18G0. 



Type, Moiiuptygma stylina A. Ads. 



Postnuclear whorls increasing regularly in size 

 Subg. Sy rnola A. Adams, I860. 



Type, Syrnola gracilUma A. Ads. 



Aperture sviboval 



Sect. S> rnola A. Adams, s. s. 



Ai^erture subquadrate 



Sect. Stylopsis A. Adams, 1860. 



Type, Stylopsis typica A. Ads. 

 Surface spirally striated 



Iphiana subg. nov. 



Type, Syrnola densistriata Garrett. 



Surface axially and spirally striated with a strong spiral 

 keel at the summit of the whorls 



Syrnolina subg. nov. 

 Type, Syrnola rubra Pse. 



