280 CYCLOSTOMID^. 



HAGENMUELLERiA, Bourg., 1882. 2 sp. Algiers. P. Pechaiidi, 

 Bourg. 



CARDiosToaiA, Sandberger. P. trochalus, Sandb. Eocene ; 

 Europe. 



Realia, Gray. 



Syn — Liarea, Gray. Hydrocena, Auct. (in part). 



Distr. — 25 sp. Mauritius, Philippines, Polj'nesia. P. egea, 

 Gray (Ixxv, 39). 



Shell turreted or turbinate, nearh^ smooth; perforated; aper- 

 ture oval ; peristome continuous, straight or expanded. Oper- 

 culum paucispiral, thin, corneous. 



CYCLOMORPHA, Pcasc. Shell turbinate, subglobose, solid, smooth, 

 or spirally striate, perforate ; aperture nearly circular; peristome 

 simple, somewhat thickened, connected on the columellar side 

 by a thin callus. Operculum paucispiral. 2 sp. Polynesia. 

 B.Jlava, Brod. (Ixxv, 40). 



OMPHALOTROPis, Pfeiffer. Shell turreted or globosely turbinated, 

 carinated around the umbilical perforation ; aperture oval ; peri- 

 stome expanded or simple. Polynesia. B. rubens, Quoy (Ixxv, 

 41, 42). 



JAPONIA, Gould, 1859. Globosely conical, whorls contiguous, 

 but scarcely impinging ; umbilicus open ; decussated by lamellar 

 growth-lines and revolving lirse. Operculum thin, paucispiral. 

 3 Japanese species. B. musiva^ Gld. 



SCALINELLA, Peasc. Shell scalariform, narrowly perforate ; 

 whorls rounded, longitudinally costate, suture profound ; lip 

 subcircular, continuous, barel}^ or not in contact, simple. Poly- 

 nesia. B. Taheitensis, Pease (Ixxv, 43). 



ATROPis, Pease. Shell elongate, sometimes cylindrical, rarely 

 ovate, imperforate, in the species of ovate form narrowly per- 

 forate ; aperture ovate, occasionally circular ; peristome con- 

 tinuous, sometimes disconnected from the penultimate whorl 

 and very slightly porrected. Last whorl frequently obtusely 

 angulate on its periphery, of one color, usually pale yellow or 

 reddish. Polynesia. B. Caledonica, Crosse (Ixxv, 44). 



II. Pupinea. 

 PupiNA, Vignard. 



Syn.— Eupupina, Pfr. Moulinsia, Grat. 



Distr. — 42 sp. East Indies, Japan, Philippines, Australia. 

 P. bicanaliculata, Sowb, (Ixxv, 45). 



Shell subcylindrical, usually polished ; aperture circular, 

 peristome thickened, notched in front and at the suture. Oper- 

 culum membranous, narrow-whorled. 



REGiSTOMA, Yan Hasselt. (Rhegostoma, Agassiz). Shell 

 pupiform, thin, transparent, smooth, polished; whorls displaced, 

 apex papilliform ; peristome reflected, with a narrow channel 



