COCHLOSTYLA-HELICOSTYLA. 189 



Var. NIGROLABIATA Moll. 



Less elevated, much thinner ; peristome scarcely thickened, little 

 expanded, black-brown ; columella white, distinctly toothed. Alt. 

 22 , diam. 23 mill. (Moll) 



C. LANGUIDA Pfeiffer. PL 36, fig. 30. 



Imperforate, globose, rather thin, regularly and closely obliquely 

 striated. Apex obtuse, buff ; suture marked by a shining brown 

 line. Whorls 4, a little convex, the last rufous, covered with an 

 ashen hydrophanous cuticle, lineolate with white ; base nude, 

 shining. Columella vertical, white- calloused ; aperture suboval ; 

 peristome ? (P/r.) Alt. 30, diam. 30 mill. 



Siquijor, Philippines. 



H. languida PFR., P. Z. S. 1842, p. 150 ; Mon. i, p. 254. REEVE, 

 Conch. Icon. f. 68. 



Described and figured from two decidedly immature examples. 



C. UNICA Pfeiffer. PL 36, fig. 33. 



Imperforate, globose, rather solid, obliquely striatulate, whitish ; 

 suture profound; whorls 51, inflated, the upper nearly flat ; colu- 

 mella profoundly entering, arcuate, subcanaliculate. Aperture very 

 oblique, subcircular, white within ; peristome widely expanded, 

 inwardly reddish, margins approximating, basal thickened. Alt. 

 19, diam. 38 mill. (Pfr.) 



Zamboanga, Mindanao, Philippines (Cuming). 



H. unica PFR., P. Z. S. 1842, p. 151 ; Monogr. i, p. 253. REEVE, 

 Conch. Icon. f. 74. 



C. LACERA Pfeiffer. PL 59, figs. 1, 2. 



Imperforate, ovate-globose, solid, scarcely striated, brown, varied 

 with a brown-ashen ragged cuticle. Spire serniglobose, obtuse; 

 suture hair-margined with pale, not at all impressed above, becom- 

 ing profound. Whorls 43 the upper scarcely convex, the last two 

 rounded, the last whorl somewhat ascending in front. Aperture 

 oblique, subtetragonal-oval, livid inside ; peristome narrowly ex- 

 panded and reflexed, columellar margin somewhat straightened, 

 flat, dilated, forming an angle with the basal margin. Alt. 30, 

 greater diam. 33, lesser 27* mill. (Pfr.) 



Philippines. 



H. lacera PFR., P. Z. S. 1853, p. 126; Monogr. iv, p. 206. 

 REEVE, Conch. Icon. f. 1266. 



