12 COCHLOSTYLA-ORTHOSTYLUS. 



Biilimiis aplomorphus JONAS, P. Z. S. 1842, p. 189. PHILIPPI, 

 Abbild. u. Beschreib. ii, Bid. t. 6, f. 1. ? REEVE, Conch. Icon. t. 

 10, f. 47. 



This form differs from C. ventricosa in being smaller, slenderer, 

 with somewhat higher spire. It may, perhaps, prove to be con- 

 nected by intermediate specimens with ventricosa. The single spec- 

 imen before me agrees with Philippi's figures in all respects except 

 that it is frosted over with silvery cuticle. 



C. VELATA Broderip. PI. 12, fig. 12. 



Imperforate, ovate-oblong, solid ; yellowish, ornamented with 

 two bands and a basal area of chestnut, veiled with a whitish 

 hydrophanous cuticle. Spire conic, apex obtuse. Whorls 6, 

 scarcely convex, the last about equal to three-sevenths the entire 

 length. Columella nearly straight, slightly dilated, rose-white; 

 aperture oval, milk-white within ; peristome somewhat thickened, 

 narrowly reflexed, brown-edged. (Pfr.) 



Alt. 44, diam. 21 ; aperture, alt. 21, width 12 mill. 



Camotes Is., Philippines. 



Bidinus velatus BROD., P. Z. S. 1841, p. 15. Bulimus velatus 

 PFR., Monogr. ii, p. 31. REEVE, Conch. Icon. t. 11, f. 57. 



Compare C. aplomorpha. 

 C. LIBROSA Pfeiffer. Unfigured. 



Imperforate, ovate-oblong, solid, striatulate, covered with a some- 

 what hydrophanous cuticle of a parchment-ashen color, irregularly 

 streaked and at the suture ocellated with brown. Spire a little con- 

 vexly conic, obtuse ; whorls 5i, nearly flat, the last slightly shorter 

 than the spire, shining dark chestnut ; the cuticle deciduous around 

 the pale, compressed, somewhat straightened columella. Aperture 

 oblique, oval-oblong, bluish inside ; peristome chestnut-black, some- 

 what thickened, revolute, the right margin lightly arcuate. (Pfr-) 



Alt. 40, diam. 21 ; aperture, alt. 19, width 11 mill. 



Palawan, Philippines. 



B. librosus PFR., P. Z. S. 1856, p. 388 ; Monogr. iv, p. 375. 



Very similar in appearance to C. velata, according to Pfeiffer. 



C. FULGETRUM Broderip. PL 4, figs. 32, 33, 34, 35. 



Imperforate, oblong-conoid. Ground color light yellow or light 

 brown, paler on the spire, frequently having a dark band at the 

 columella ; hydrophanous cuticle thin and rather deciduous, marked 



