COCHLOSTYLA-CALOCOCHLEA. 131 



Whorls 4? ; suture shallow ; apex very obtuse ; last whorl but lit- 

 tle descending. Aperture oblique, white or tinted inside ; lip re- 

 flexed, white, edged with dark brown; coluraella oblique. 



Alt. 27, diam. 35 mill. 



Alt. 21,diam. 28 mill. 



Province of Misamis, northern Mindanao. 



H. cromyodes PFR., P. Z. S. 1842, p. 150; Monogr. i, p. 261 ; 

 Conchyl. Cab. t. 53, f. 6, 7. RVE., Conch. Icon. f. 1429. Cochlo- 

 styla cromyodes SEMPER, Reis. p. 171. H. valenciennii EYDOUX, 

 Mag. de Zool. 1838, t. 115, f. 2, a dead shell, denuded of cuticle. 

 (Not H. valenciennesii Pfr. ; see Corona eydouxi Hidalgo, this vol- 

 ume p. 123.) 



Rather thin, and generally unicolored except for the darker spire. 

 Some specimens show a faint peripheral dark band, and rarely 

 a dark band is developed around the columella. Numerous narrow 

 hydrophanous bands are seen on some specimens. 



C. DENTICULATA Jay. PI. 52, figs. 17, 18, 19. 



Imperforate, depressed-globose, decidedly solid. Surface smooth 

 the growth lines inconspicuous. Color a light brown tint, the spire 

 white, having a dark brown margin above the suture. 



Spire very low, apical whorl plane. Suture superficial. Whorls 

 4, the last wide, slightly descending and then ascending in front. 

 Aperture oblique, white within ; lip rather thick, reflexed, edged 

 with dark brown. Columella very oblique, wide, white, ending be- 

 low in a stout tooth. Alt. 25, greater diam. 34, lesser 29 mill. 



Habitat unknown. 



H. denticulata JAY, Catalogue (edit, of 1839), p. 114, t. 1, f. 21. 

 PFR., Monogr. i, 311. 



The above description and the figures are from Jay's type speci- 

 men, kindly loaned by Prof. R. P. Whitfield, of the American 

 Museum of Natural History, New York City. 



The shell is decidedly solid ; the columella is wide, its face gently 

 convex, its base strongly toothed, much as in C. curta Sowerby. 

 The cuticle is wholly worn from the specimen, but under the very 

 thin parietal callus it is seen to be of the yellow color of that of C. 

 cromyodes, a species also resembling denticulata very closely in con- 

 tour, in the suprasutural margination of the spire whorls, in the 

 appearance of the surface, and the dark-edged lip. From C. 

 cromyodes, the present species differs only in being more solid, in the 



