COCHLOSTYLA-CANISTRUM. 45 



non-plicate columella, the green basal area, sutural dark border, 

 etc. 



C. STABILIS Sowerby. PI. 6, figs. 25, 26, 27, 28. 



Im perforate, ovate-conic, solid, compact. The color, in specimens 

 which have been thoroughly wetted, or denuded of their hydro ph- 

 anous cuticle, is dark chestnut-brown with an indistinct black band 

 at the periphery and a wide snow-white band under the suture ; spire 

 white with a brown band above the suture (figs. 27, 28). In fresh 

 specimens this coloring is totally concealed by a dense coat of cream- 

 white hydrophanous cuticle, having a narrow black line at the periph- 

 ery and a wider one on the base ; the peripheral line extending up 

 the spire above the sutures, becoming brown there. 



Spire elevated, apex obtuse. Whorls 62, slightly convex, narrow. 

 Aperture oval-truncate, nearly white within, and showing faintly 

 the peripheral band ; lip well expanded, white. Columella sub- 

 vertical, white. 



Alt. 32, diam. 20 mill. 



Alt. 26, diam. 19 mill. 



Southern Burias, Philippines. 



Helix stabilis SOWERBY, P. Z. S., 1840, p. 104. Bui. stabilis PFR., 

 Symbolse ii, p. 51 ; Monogr. ii, p. 34; Conchyl. Cab., p. 172, t. 51, 

 6. PHIL., Abbild., iii, t. 7, f. 4. KEEVE, Conch. Icon., t. 12, f. 67. 

 Cochlostyla stabilis SEMPER, Reisen im Archip. Phil., Landmoll., 

 p. 219, t. 13, f. 7 ; t 18, f. 5 (anatomy.) 



This is a very solid, high-trochiform species. The young are ear- 

 in ated, and the keel generally persists on the front of the body- 

 whorl. The coloring changes completely when the hydrophanous 

 cuticle is removed. The species is extremely constant in color- 

 pattern. Under a strong lens the whole surface is seen to be finely 

 striated spirally. 



C. BREVICULA Pfeiffer. Vol. VII, pi. 47, fig. 64. 



Imperforate, subovate, the apex obtuse ; obliquely obsoletely 

 striated ; shining, white, covered with a buff epidermis. Whorls 6, 

 narrow, slightly convex, the last about one- third the total length. 

 Columella nearly straight, expanded in a thin plate. Aperture 

 very oblique, transversely semioval ; peristome simple, expanded. 

 (P/r.). Alt. 28, diam. 18 ; aperture alt, inside, 13, width 9 mill. 



Romblon, Philippines. 



