138 COCHLOSTYLA-CALOCOCHLEA. 



oblique, compressed, excavated, white. Aperture diagonal, obliquely 

 truncate-oval, milk-white inside ; peristome thin, margins conniving, 

 the right one scarcely expanded, basal thickened, narrowly reflexed, 

 forming an obtuse angle with the columella. 

 Alt. 40, diam. 57 mill. (P/r.) 



Philippines. 



H. generalis PFR., P. Z. S. 1854, p. 123 ; Novit. Conch, i, p. 2, 

 t. 1, f. 6 ; Monogr. ii, p. 206. REEVE, Conch. Icon., f. 1349. 



C. CHRYSOCHILA Sowerby. PL 34, figs. 9, 10. 



Irnperforate, globose-subdepressed, solid ; surface delicately 

 striate-obliquely, having microscopic spiral lines above, and some- 

 times obscurely malleated. Bright greenish-yellow, the earlier whorls 

 tinged with rufous ; suture edged with a white line ; no hydrophanous 

 cuticle ; lip broadly reflexed, yellow. 



The spire is somewhat conoid, apex very obtuse, whorls nearly 5, 

 the last slightly descending and then ascending in front. Aperture 

 large, white inside ; lip broadly expanded, yellow; columella thick^ 

 yellow, expanding in a concave white callus. 



Alt. 39, diam. 43 mill. 



Calayan, Philippines* 



H. chrysocheila SOWB., P. Z. S. 1841, p. 3. PFR., Monogr. i, p. 

 248 ; Conchyl. Cab., p. 275, t. 44, f. 5, 6. REEVE, Conch. Syst. ii, 

 p. 163, f. 1 ; Conch. Icon., f. 25. Cochlostyla chrysochila SEMPER,. 

 Reis., p. 175. HIDALGO, Journal de Conchyl. 1887, p. 125. 



A large, smooth yellow species, altogether lacking hydrophanous 

 cuticle, and with a yellow lip. 



(3). Group of C. polillensis. 



C. POLILLENSIS Pfeiifer. PI. 32, figs. 43-50. 



Imperforate, globose-conoid, somewhat solid, nearly smooth ; 

 ground-color varying from light-yellow to reddish-chestnut, plain or 

 having 2 to 4 bands ; covered with a light brown or creamy 

 hydrophanous cuticle, which generally forms a finely checkered 

 pattern without any conspicuous bands. Columella having a strong 

 fold near its insertion. 



The contour varies much. Whorls 5, the last scarcely descend- 

 ing in front. Aperture oblique ; lip reflexed and somewhat thick- 



