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. 



Iraperforate, globose, rather thin, regularly and closely obliquely 

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

 line. Whorls 4J, 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/V.) 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 5J, inflated, the upper nearly flat ; colu- 

 melia profoundly entering, arcuate, subcanaliculate. Aperture very 

 oblique, subcircular, white within ; peristome widely expanded, 

 inwardly reddish, margins approximating, basal thickened. Alt. 

 19, diam. 38 mill. (P/r.) 



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. Hpire semiglobose, obtuse ; 

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

 ing profound. Whorls 4-1 the upper scarcely convex, the last two 

 rounded, the last Whorl somewhat ascending in front. Aperture 

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

 panded and reflexed, cplumellar margin somewhat straightened, 

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

 greater diam. 3.3, lesser 27s mill. 



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

 REEVE, Conch. Icon. f. 1266. 



