34 cocHLOSTYLA-i-:ri>o.\rs. 



B. simplex JONAS, Proc. Zool. Soc. 1S42 ; p. l<s<).- - 

 Abbild. i, p. 53, t. 1, f. 2. PFR., Monogr. ii, p. 11 ; Conchyl. Cab. 

 p. 181, t. 53, f. 8. REEVE, Conch. Icon. t. 12, f. 63. 



Allied to C. albersi, but narrower and more conic. 



C. QUADRASI Hidalgo. PL 5, figs. 5, 6, 7. 



Imperforate, ovate-conoid, solid, shining, smooth, (seen under a 

 lens to be slightly and very minutely decussated by oblique and 

 transverse scrise) ; white under a very thin green cuticle which is 

 evanescent above, ornamented with pale or intense brown-purple 

 bands, the base begirt with a black zone. 



Spire conical, apex rather obtuse. Whorls 6, slightly convex, 

 the last shorter than the spire ; columella nearly straight, white ; 

 aperture oval, truncated above, white inside, showing the Jmnds 

 more or less ; peristome little thickened, slightly expanded, roseate or 

 brown-purple. (Hid.) 



Alt. 26, diarn. 14 ; aperture, alt. 12, width 8 mill. 



Saban and Torrijos, Marinduque. 



C. quadrasi HID., Journ. de Conchyl. 1886, p. 154, t. 8, f. 3, 3a, 

 4; /. c. 1887, p. 177. 



This species, says Hidalgo, is allied to C. simplex Jonas, but it is 

 quite distinct in coloration and the less swollen form. 



C. COSSMANNIANA Crosse. PL 5, figs. 8, 9. 



Imperforate, ovate-conoid, solid, somewhat shining, smooth (under 

 a lens showing irregular suboblique growth lines and transverse, 

 very delicate line). Whitish under a thin, shining, pale buff-green 

 cuticle, obscurely banded with brown, green-black around the colu- 

 mella. Spire conic, apex slightly obtuse, white ; suture impressed, 

 pallid. Whorls 6, slightly convex, the last slightly shorter than the 

 spire. Aperture ovate-angulate, brown-purple inside, white below 

 the suture and at the edge ; peristome somewhat thickened, slightly 

 expanded, white; base marked with purple; margins separated, the 

 columellar margin nearly straight, basal rounded, outer margin 

 arched. Alt. 28, diam. 19 mill. (Crosse.) 



Torrijos and Saban, Marinduque, Philippines. 



C. cossmanniana CROSSE, Journ. de Conchyl. 1886, p. 156, t. 8, f. 

 6. HIDALGO, Journ. de Conchyl. 1887, p. 177. 

 Allied to C. quadrasi, but less slender, etc. 



