COCHLOSTYLA-CANISTRUM. 45 



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

 etc. 



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



Imperforate, 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 bond 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; Conch yl. Cab., p. 172, t. 51, 

 f. 6. PHIL., Abbild., iii, t. 7, f. 4. REEVE, 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. 

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



Romblon, Philippines. 



