COCHLOSTYLA-ORTHOSTYLUS. 201 



Malacol, t. 67, f. 1-4. Bui. philippinensis PFR., P. Z. S. 1846, p. 

 42 ; Conchyl. Cab. p. 164, t. 50, f. 1. REEVE, Conch. Icon. f. 5- 

 DH. in Fer. Hist. t. 110A, f. 10, 11. Cochlostyla philippinensis 

 SEMP., Reisen, p. 202. C. pithogaster var. philippinensis HIDALGO, 

 Obras, t. 67, f. 5. 



The typical C. pithogaster is an elongated shell, covered with a 

 uniform dark cuticle (fig. 5). It is impossible, however, to draw a 

 line between the elongated forms and the short, obese forms, such as 

 that shown in fig. 3. The intergradation is complete. It is equally 

 impracticable to separate as a distinct species, the form called 

 philippinensis, as all stages from a uniform to a streaked cuticle are 

 present in the suite before me. 



Color-var. philippinensis Pfr. PL 61, fig. 24. 



Hydrophanous cuticle distinctly obliquely streaked. 



Color-var. bipartita Pils. PI. 61, fig. 23. 



Ground-color dark brown below, lighter brown or yellowish above 

 the periphery, earlier whorls whitish ; hydrophanous cuticle not 

 especially streaked. 



Alt. 67, diam. 43 mill. 



Alt. 59, diam. 38 mill. 



C. VILLARI Hidalgo. PL 40, fig. 1. 



Imperforate, ovate-conoid, solid, little shining, striatulate. Buff, 

 under a whitish-ashen cuticle, which is scarcely streaked; above paler, 

 apex flesh-colored. 



Spire conoid, apex obtuse ; suture seen under a lens to be minutely 

 denticulated. Whorls 6, convex, the last large, about the total 

 length, descending in front, the base slightly depressed. Aperture 

 rounded-subquadrate, white inside ; peristome reflexed, white, 

 angularly joining the white, rather wide and scarcely oblique col- 

 umella. (Hid.} 



Alt. 69, diam. 50 mill. 



Boac, Gasan and Saban, Marinduque. 



C. villari HID., Journ. de Conchyl. 1887, p. 166, t. 6, f. 3. 



Var. Last whorl chestnut, the rest tawny, apex flesh-colored, 

 columella rose-brown, peristome purple-black. (Hid.) 



C. DAPHNIS Broderip. PL 42, figs. 20, 21, 22, 23. 



Imperforate, ovate-conic, solid. Ground-color either (1) light 

 olive-buff becoming lighter toward the white apex, or (2) chestnut- 



