46 COCHLOSTYLA-PROCHILUS. 



B. breviculus PFR., P. Z. S., 1842, p. 88 ; Symb. ii, p. 43 ; Mon- 

 ogr. ii, p. 35. PHIL., Abbild. iii, p. 33, t. 7, f. 8.? ? B. breviculus 

 KEEVE, Conch. Icon. t. 12, f. 65. 



Nearly allied to C. stabilis, but readily separated by its short com- 

 pressed contour, more convex whorls and the broad semi-ovate 

 aperture. All examples which I have seen are unicolored white or 

 with a narrow brown crescent around the columella, and having an 

 evanescent yellowish epidermis over the rest. The columella is ver- 

 tical, dilated in a thin reflexed lamina; the lip simple, pretty 

 broadly expanding. (Pfr.) 



Keeve's figure probably does not represent this species. 



Section XV. PROCHILUS Albers, 1860. 



Prochilus ALBERS in Marten's edit, of Die Heliceen, p. 179, type 

 C. virgata. 



Shell narrowly perforated, ovate-pyramidal, smooth and shining ; 

 the spire long. Aperture small, less than half the length of the 

 shell ; peristome very broadly reflexed. The soft parts of these 

 strikingly handsome shells are still unknown, but the affinities of the 

 group seem to be with Canistrum and Chrysallis. They live on 

 trees, like other conspicuously colored Cochlostylas. 



C. CALOBAPTA Jonas. PL 15, figs. 7, 8, 9. 



Perforate, ovate-pyramidal, thin ; the spire high and slender. 

 Cream colored or tawny brown, bandless or encircled by a dark zone 

 at periphery and another at umbilicus, the former ascending the spire, 

 forming a narrow edge above the suture; varied with conspicuous 

 oblique stripes of cream-white hydrophanous cuticle. 



The spire is slender, high; apex obtuse. Whorls 5i, convex. 

 Aperture oblique, showing the band within : peristome thin, broadly 

 expanded, white ; its reverse having the same color as the general 

 surface of the shell. Columella reflexed, the reflexed edge curving 

 backward, or partly around the umbilicus, at its junction with the 

 base. Alt. 40, diam. 20 mill. 



Mindoro, Philippines. 



B. calobaptus JONAS, P. Z. S., 1842, p. 188. PHIL., Abbild. i, t. 

 1, f. 6. PFR. in Conchyl. Cab. p. 116, t. 35, f. 11-14; Monogr. ii, 

 p. 42. Cochlostyla calobapta SEMP., Reis. p. 221. Bui. cuyoensis 

 REEVE, Conch. Icon. t. 9, f. 43. 



