COCHLOSTYLA-HYPSELOSTYLA. 21 



expanded. In the last character it is like C. subcarinata, but the 

 constant epidermal subsutural band of that species is lacking in 

 eburnea. 



Fig. 11 is incorrect in showing the columella arcuate. In the 

 specimen from which that figure was drawn, as well as in all others 

 which I have seen, the columella is straight above, subtruncate 



below. 



Group of C. carinata. 



Species having the ground color either dark or light. Covered 

 with a variously patterned, conspicuous hydrophanous cuticle. 



C. NIMBOSA Broderip. PI. 4, figs. 36, 37. 



Imperforate, ovate-conic, elongated. Ground color chestnut- 

 brown (or light green), with a dark columellar tract and usually a 

 narrow peripheral band ; irregularly speckled and longitudinally 

 flamed with cream-white or brown hydrophanous cuticle, the flames 

 usually zigzag; apical whorls orange or light brown. 



Spire conical, elevated ; whorls 6$. Aperture shorter than the 

 spire, oblique ; peristome expanded, somewhat reflexed, flesh col- 

 ored or brown. Columella vertical. 



Alt. 63, diam. 36 ; oblique alt. of aperture 32 mill. 



Alt. 62, diam. 34 ; oblique alt. of aperture 30 mill. 



Negros and Panay, Philippines. 



Bulinus nimbosus BROD., P. Z. S., 1840, p. 121. Bulimus nim- 

 bosus PFR., Monogr. ii, p. 30 ; Conchyl. Cab. p. 209, t. 59, f. 3. 

 KEEVE, Conch. Icon. t. 4, f. 17. DESH. in Fer. Hist. t. 145 A, f. 

 18, 19. B. pfei/erianus REEVE, Conch. Icon. t. 4, f. 18. 



This species is the largest of the section Hypselostyla. It is 

 closely allied to C. nympha, differing in its larger size and the more 

 expanded and lighter colored lip. Compared with C. ventricosa 

 and fulgetrwn this species is seen to have a more pyramidal, nar- 

 rower spire and the hydrophanous cuticle is more speckled. The 

 figures are drawn from typical specimens in the Philadelphia 

 collection. 



The color variety pfeifferiana II ve. (fig. 37) has a light yellowish- 

 green ground color, with the usual dark columellar patch, but with- 

 out a peripheral band. 



C. ELEGANS Semper. PI. 13, fig. 55. 



Imperforate, ovate-oblong, thin, tawny, with a very elegantly 

 marbled and flamed cuticle of pale brown. 



