156 COCHLOSTYLA-CALOCOCHLEA. 



white. The earlier whorls are white. The base is of a glossy bright 

 yellow. 



C. DIMERA Jonas. PI. 30, figs. 29, 30. 



Imperforate, globose-elevated, rather thin ; surface showing faint 

 growth-lines but no spiral stride. Buff above, chocolate-brown below 

 the periphery, the suture margined above and below with brown ; 

 apical whorl dark purple, fading into pink on the second and third 

 whorls. Under the thin buff cuticle the upper surface is white. 



Spire elevated, apex obtuse. Whorls 5, slightly convex, the List 

 but slightly descending. Aperture half-round, bicolored within ; 

 lip very slightly expanded, dark brown; columella rather wide, 

 wliiie. 



Alt. 31, diam. 25 J mill. 



Alt. 25 i diam. 24 mill. 



Mindoro, Philippines. 



H. dimera JONAS, Moll. Beitr., p. 23, t. 11, f. 17. PFR., Monogr. 

 i, p. 225 ; Conchyl. Cab. t. 50, f. 3, 4. REEVE, Conch. Icon. f. 61. 

 H. Jonasi var. beta PFR., P. Z. S. 1845, p. 126 (teste Pfr.). 

 Cochlostyla dimera SEMPER, Reis. p. 187. HIDALGO, Journ. de 

 Conchyl. 1887, p. 141 (with var.). 



Hidalgo describes a variety with whitish shell, the apex violaceous, 

 columella surrounded with tawny zone. 



C. CROSSEI Hidalgo. PI. 56, figs. 57, 58. 



Imperforate, subglobose-conoid, the apex obtuse ; rather solid, 

 opaque, not shining, scarcely striatulate; blackish under an ashen- 

 brown epidermis, which is transversely lineated with brown. 

 Whorls 4 to 45, convex, the first nude, blue black, the last equaling 

 one-half the total length, the base less convex. Aperture rounded- 

 subquadrangular, blue or blue-brown inside; columella oblique, 

 subdilated, white ; peristome black, slightly reflexed. 



Alt. 26, greater diam. 28, lesser 25 mill. (Hid.} 



Agcalatao, near Badajos, Tablas. 



C. OrosseiHiD., Journ. de Conchyl. 1887, p. 141, t. 5, f. 4. 



This species presents analogies with C. dimera, alaucopthalma, 

 libata and carbonaria. It is distinguished from the first by its colora- 

 tion, its cuticle, and its more ventricose form ; from the second by 

 its general form and epidermis ; from the third by its coloration and 



