COCHLOSTYLA-ORTHOSTYLUS. 201 



Malacol, t. 67, f. l-4.BuLphilippinensis 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. 110 A, 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. PI. 61, fig. 24. 



Hydrophanous cuticle distinctly obliquely streaked. 

 Color-var. bipartite* 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. 



. VILLARI Hidalgo. PI. 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 2 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 Conchy!. 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- 



