116 COCHLOSTYLA-CORASIA. 



suture light, impressedly-margined. Whorls 4, a little convex, 

 rapidly increasing, the last depressed-globose, visibly a little descend- 

 ing in front; columella white, straightened, oblique, compressed, 

 excavated above ; aperture oblique, lunate-subcircular, with a pearly 

 luster inside; peristome thin, margins converging, the upper margin 

 curving forward, narrowly expanded, basal margin reflexed, forming 

 an obsolete angle with the columella. 



Alt. 16, greater diam. 27, lesser 22 mill. (P/r.) 



Tular [Talaurf] Islands. 



H.physalis PFR., Mai. Bl. xviii, 1871, p. 123 ; Novit. Conch, iv, 

 p. 73, t. 121, f. 10, 11 ; Monogr. vii, no. 2316. 



Allied to H. najas, obliquata and extensa but much more depressed, 

 the last whorl less inflated, little descending, columella much slop- 

 ing, forming a very obsolete angle with the basal margin. 



H. OBLIQUATA Deshayes. PI. 27, figs. 14, 15. 



Shell subglobose, pure white, delicately striate ; spire short, obtuse ; 

 whorls 4, nearly flat, the last large, inflated, obliquely deflexed to- 

 ward the aperture; base imperforate. Aperture ovate-lunar, dilated 

 in the middle, coarctate posteriorly ; peristome margined, narrowly 

 reflexed, base covered with a short callus. 



Alt. 22, diam. 27 mill. (Desk.} 



Habitat unknown. 



H. obliquata DH. in Fer., Hist, i, p. 219, t. 28a, f. 3, 4. PFR., 

 Monogr. iii, p. 192. 



(3) GROUP OF C. REGIN^E. 



Acutely carinated forms, flattened above, of a more or less pro- 

 nounced green tint ; lip white ; surface seen under a lens to be dis- 

 tinctly spirally striated, often obliquely corrugated. 



C. REGIN^E Broderip. PL 25, figs. 45, 46. 



Imperforate, depressed, piano-con vex above, con vex below; thin; of 

 a bright bluish-green color, the apical H whorls and the lip white. 

 Surface delicately obliquely striatulate, obsoletely, very finely spirally 

 striated. Whorls 3i, the last acutely keeled, slightly concave above 

 and below the keel, not descending in front, tumid beneath. Aper- 

 ture subtriangular-lunar; peristome thin, outer margin expanded, 

 baso-columellar margin adnate, slightly thickened within, dilated 

 over the umbilicus. Alt. 11, greater diam. 28, lesser 22 mill. 



