278 TRUNCATELLTD^. 



CECiNA, A. Acl., 1861. Shell imperforate, subcylindrical, epi- 

 dermis olivaceous ; apex ob'tuse, eroded, not truncate ; whorls 

 flat, smooth ; aperture" ovate, vertical, rounded in front, acumi- 

 nated behind ; the continuous lip flexuous and subproduced in 

 the middle. Operculum corneous, paucispiral. Tentacles lobi- 

 form, with obtuse apices, the large eyes at their external bases. 

 Rostrum elongate, cylindrical, annulate. Foot short, oblong. 

 Manchuria. T. Manchurica, A. Ad. 



Geomelania, Pfeiffer. 



JEti/m. — Ge, the ground {i. e. terrestrial), and Melania. 



Distr. — 21 sp. Jamaica. G. Jamaicensis, Pfr. (Ixxv, 25). 



Shell imperforate, turreted ; aperture entire, effused ; peris- 

 tome simple, expanded; margins joined, basal produced into a 

 tongue-shaped process. Operculum oval, pellucid, whorls few, 

 rapidly enlarging. 



BLANDiELLA, Guppy. Labrum without lingiiiform appendage. 

 Operculum paucispiral, inner side cartilaginous, externally cal- 

 careous, rugose. 1 sp. Trinidad, W. I. G. reclusa^ Guppy 

 (Ixxv, 26, 27). 



CHiTTiA, Livesa}^ Shell imperforate, conic, cylindrical ; aper- 

 ture ovate, moderately effuse, peristome thickened, sharply 

 reflected, not produced, with a sinus on the inner side near the 

 axis. G. sinuosa^ Chitty (Ixxv, 28). There is only the type 

 species; hnt Aciculiyia emargiyiata, Desh., an eocene fossil of 

 the Paris basin, may also be referred to this subgenus. 



Renea, ISTevill. 



Etym. — Named in honor of J. Rene Bourguignat. 



Distr. — 2 sp. Southern France. B. Bourguignatiana, Nevill 

 (Ixxv, 29, 30). 



Shell imperforate, elongated -cylindrical, whorls numerous, 

 compressed, costulate ; margin of peristome obtuse, thickened 

 within, without external marginal varix ; outer lip with a 

 pleurotomoid sinus posteriorly ; columella nearly perpendicular, 

 slightly twisted above, where it presents a superficial, channel- 

 like indentation. 



Tomichia, Benson. 



Distr. — India, Japan, So. Africa. T. ventricosa, Sowb. 

 (Ixxv, 31). 



Shell with elongated spire and generally truncated apex ; per- 

 forated ; peristome continuous, double or triple. Operculum 

 paucispiral. 



Blanfordia, Ad. 



Etijm. — Named in honor of W. T. Blanford. 



Distr. — 4 sp. Japan, Australia. B. Japonica^ A. Ad. (Ixxv, 32). 



Shell ovately conical, epidermis olivaceous, smooth, apex 



