192 COCHLOSTYLA-HELICOSTYLA. 



C. FENESTRATA Sowerby. PI. 58, figs. 95, 96. 



Imperforate, globose, solid ; smooth ; ground-color (under the 

 hpdrophanous cuticle) dark chestnut, the earlier whorls whitish ; 

 covered with a very thin hoary cuticle with oblique whiter streaks, and 

 having a cream-white band just above and one below the periphery* 

 There is a series of angular dark chestnut spots a short distance be- 

 low the suture, and the base is more or less denuded in front of the 

 aperture. 



Spire elevated ; whorls 5, slightly convex, the last deflexed in 

 front. Aperture rounded-truncate, bluish-white inside; lip thick- 

 ened within, expanded, white with a brown edge. Columella steeply 

 sloping, inconspicuously 2-lobed, its face flattened and shallowly 

 grooved. Alt. 20, diam. 18 J mill. 



Cagayan and N. Ecija, Luzon. 



H.fenestrata Sows., P. Z. S. 1840, p. 137. REEVE, Conch. Syst. 

 ii, t. 166, f. 24 ; Conch. Icon., f. 50. PFR., Monogr. i, p. 227 ; Con- 

 chyl. Cab., t. 108, f. 9, 10. Cochlostyla fenestrata SEMPER, Reis. 

 Phil. Archip. Landmoll., p. 198. 



A small species, readily known by the peculiar color-pattern. It 

 is more allied to C. montana Semper than to any other species. 



C. CURTA Sowerby. PI. 37, figs. 47, 48. 



Imperforate, ovate-conoid, solid and thick. Ground-color yellow 

 (or black-brown), covered with a hydrophanous cuticle which i& 

 creamy above, brown on the base, and is deciduous in patches, show- 

 ing a series of spots of the ground-color on the upper surface of the 

 whorl. Surface microscopically spirally striated. 



Spire conoidal, apex very obtuse. Whorls 6, almost flat, narrow, 

 the last whorl slightly descending in front. Aperture small, oblique, 

 white inside; peristome narrowly reflexed, strongly thickened 

 within, white or brown edged. Columella short, oblique, white, 

 very strongly thickened, more or less truncated below. 



Alt. 29, diam, 23 mill. 



Balanan, prov. La Union, northern Luzon, Philippines. 



H. curta Sows., P. Z. S. 1841, p. 20. PFR., Monogr. i, p. 223; 

 Conchyl. Cab. p. 429, t. 150, f. 8, 9. REEVE, Conch. Icon. f. 34. 

 Cochlostyla curta HID., J. de C., 1887, p. UQ.Bul. dilatatus REEVED 

 Conch. Icon. f. 69. 



