20 COCHLOSTYLA-HYPSELOSTYLA. 



lendorffi. It is found associated with typical subcarinata in Marin- 

 duque (pi. 11, figs. 18, 19, 21). 



Still another form is shown in fig. 17. It has a black-chestnut 

 band at suture, periphery and columella, but the lip is pure white. 

 This also lives associated with the preceding. It may be distin- 

 guished from the similarly marked C. cincinna var. romblonensis by 

 the thin, expanded lip. 



C. EVANESCENS Broderip. PI. 7, fig. 38. 



Imperforate, ovate-conic, thin ; Avhitish, ornamented with a sut- 

 ural line and a basal area of chestnut ; spire conical, rather obtuse ; 

 whorls 6, nearly flat, the last rounded, about equal to three-sevenths 

 the entire length. Columella straight, ashen. Aperture lunate- 

 oval, milk-white inside; peristome thin, expanded, basal margin 

 forming an angle with the columella. (P/V*-) 



Alt. 33, diam. 19; aperture, alt. 16, width 11 mill. 



Luzon, Philippines. 



Bulinus evanescens BROD., P. Z. S., 1841, p. 15. Bulimus evan- 

 escens " Pfr.," REEVE, Conch. Icon. 1. 13, f. 72. B. evanescens Brod., 

 PER., Monogr. ii, p. 10. 



This seems to be very closely allied to C. subcarinata. I have 

 not seen specimens. Two varieties are recorded : /?, unicolored 

 white, and y, P a ^ e tawny, with darker band at the suture, basal area 

 and peristome black. 



C. EBURNEA Reeve. PI. 10, figs. 9, 11. 



Imperforate, pyramidal, elongated, pure white or covered with a 

 very thin cuticle of an excessively pale buff tint ; polished ; show- 

 ing under a lens, fine growth stride and spiral incised lines. 



Spire high, apex obtuse ; whorls 6, slightly convex, the last 

 slightly descending in front. Aperture oblique, ovate ; peristome 

 thin, expanded ; columella vertical, not arcuate or concave, slightly 

 truncated at the base. 



Alt. 39, diam. 22 ; oblique alt. of aperture 20 mill. 



Tayabas, Luzon, Philippines. 



Bulimus eburneus REEVE, Conch. Icon. t. 13, f. 74 (not Cochlo- 

 styla eburnea Hidalgo, J. C. 1887, p. 186. Not Bui. eburneus Pfr., 

 a species of Buliminus). B. politus REEVE, in corrigenda to Bui. 

 Conch. Icon. PER., Monogr. iv, p. 372. 



This is a pure white shell having the periphery rounded as in 

 C. cincinna, from which it differs in having the lip decidedly 



