COCHLOSTYLA-EUDOXUS. 41 



Only one specimen of this pure white and shining species is 

 before me. Perhaps it is merely a very globose white variety of C. 

 smaragdina ; but in the absence of any transition-forms it seems 

 necessary to indicate this as a new species. (Semper?) 



C. TIBER Pfeiffer. PI. 7, fig. 44. 



Im perforate, ovate, apex obtuse ; thin, subdiaphanous, buff-whit- 

 ish, obliquely, regularly and closely striated; spire semiglobose, sut- 

 ure impressed, white-margined ; whorls 4, inflated, the last exceed- 

 ing the spire ; columella nearly straight, somewhat thickened at 

 the base ; aperture oval ; peristome simple, widely expanded. 

 Alt. 45, diam. 29, alt. of aperture 29, width 18 mill. (Pfr.~) 



Gu imaras, Ph Hipp in es. 



BuUmusuber~PFR.,P.Z.S.,1iS42,p. 153; Monogr. ii, p. 26. 

 REEVE, Conch. Icon. t. 10, f. 48. 



C. PH^OSTYLA Pfeiffer. PI. 5, fig. 4 ; pi. 9, figs. 64, 05, 66. 



I M perforate, ovate, rather thin, shining, having indistinct growth- 

 lines and fine spiral stride ; buff, olive-buff, or tawny-buff, generally 

 having a dark chestnut band below the suture, another at the 

 periphery, and a wide, dark columellar crescent. Earlier 1* whorls 

 purple-black; lip brown-edged. 



The spire is convex-conic, apex rather obtuse. Whorls 5, slightly 

 convex. Aperture ovate, half the length of the shell, white with a 

 dark band inside. Lip thin, expanded and a trifle reflexed, brown- 

 edged. Columella vertical, almost straight, its face narrow, bevelled, 

 light brown, edged outside with white. 



Alt. 33, diam. 22 mill. 



Alt. 35, diam. 22 mill. 



Philippines. 



B. phceostylus PFR., Proc. Zool. Soc. 1856, p. 329 ; Monogr. ii, p. 

 361. Cochlostyla phceostyla HIDALGO, Journ. de Conchyl. 1887, p. 

 155, t. 6, f. D ; Obras Molacol., t. 59, f. 7, 8. 



The sutural band (fig 66), or the sutural and peripheral bands 

 (fig. 64), are sometimes absent. The shell has somewhat the color- 

 pattern of C. belcheri, but the purple apex, thinner texture, and 

 especially the form of the narrow columella, which is not dilated or 

 spreading, at once separate the two species. The columella of 

 phffiostyla is as in the typical species of Eudoxus (C. effasa, etc.), 

 whilst that of (7. belclieri has the form developed in C. diana, calista, 

 boholensis, etc. 



