COCHLOSTYLA-CALOCOCHLEA. 



wider, heavier and toothed columella, and the wider, thicker lip. 

 These characters compel me to regard denticulata as a distinct 

 -] >cies, even though but one specimen of it is known to me. 



C. AKMAIKNSIS Sowerby. PI. 52, figs. 20, 21. 



Imperforate, depressed-globose, shining, white, uuicolored or 

 brown-banded ; spire depressed, suture linear ; whorls 4, nearly flat, 

 the last inflated beneath ; columella thin, nearly straight, sloping, 

 profoundly excavated. Aperture lunate-oval, upper margin sub- 

 depressed; peristome widely expanded, white, the margin subthick- 

 rned, forming a distinct angle with the base. (Pfr.) 



Alt. 26, diam. 39 mill. 



Palanan to Camiguiii de Luzon, E. coast of N. Luzon, and Amber- 

 link, Province of La Isabella, Luzon. 



H. albaiensis Sown., P. Z. S., 1840, p. 100. PFR., Monogr. i, p. 

 2IJO; Conchyl. Cab. p. p, 215, t. 108, f. 1,2. REEVE, Conch. Icon, 

 t. 13. f. 48. Cochlostyla albaiensis SEMPER, Reis., p. 176, t. 8, f. 7 ; 

 t. 18, f. 14 (anatomy). 



( J. TUKANEXSIS Pfeiffer. PL 29, figs. 7, 8, 9, 12. 



Imperforate, subglobose, thin ; surface smooth, the spiral and in- 

 cremental striae almost obsolete. White or rosy under a thin yel- 

 lowish or reddish cuticle, sometimes having a dark band at periph- 

 ery and another at suture; hydrophanous cuticle generally absent, 

 but sometimes forming a few bands. 



Spire moderately elevated, apex very obtuse ; whorls 4s, convex, 

 the last not perceptibly descending in front. Aperture large, pink 

 or white within ; peristome thin, pink or white, broadly expanding ; 

 columella oblique, flattened, thin, nearly straight. 



Alt. 29, diam. 31 mill. 



Tukan Bessi Id. (Pfr.) ; Pular Is. (Horn}. 



II . tnL-iiiiensis PFR., Mai. Bl. xviii, p. 122, 1871 ; Xovit. Conch, 

 iv, p. 72, t. 121. f. 5-<> ; Monogr. vii, p. 324. 



A more elevated and thinner shell than C. cromyodes. Part of 

 the specimens before me are yellow instead of reddish, and some are 

 very small, alt. 17, diam. 23 mill. 



C. OBTUSA I'foih-or. PI. 35, figs. 23, 24. 



[mperf'orate, subglobose, thin, subdecussated with growth-lines 

 ami impn-v-cd obsolete concentric lines, shining, chestnut. Spire 

 , obtuse. Whorls 4, convex, the last inflated. Colu- 



