COCHLOSTYLA-ORTHOSTYLUS. 205 



and reflexed, dark brown. Columella oblique, indistinctly or 

 obviously folded below. 



Alt. 64, diam. 58 mill, (large typical form.) 



Alt. 51, diam. 38? mill. (var. minor.) 



Alt. 60, diam. 41 mill. -(elongated form.) 



Prov. Cagayan, Luzon. 



Bulimus lignarius PFR., P. Z. S. 1842, p. 88 ; Monogr. ii, p. 3 ; 

 Conchyl. Cab. Bui. t. 19, f.'l, 2. REEVE, Conch. Icon. Bui. t. 1, f. 

 3. DH. in Fer. Hist. t. 151, f. 8, 9. Cochlostyla lignaria SEMPER, 

 Reisen, p. 202. HIDALGO, Journ. de Conch. 1887, p. 160. 



The creamy subperipheral zone is a constant and leliable feature. 

 The peripheral angulation is scarcely noticeable in the smaller speci- 

 mens, such as those figured on pi. 41, and which are much more 

 numerous in collections than the larger form. These small speci- 

 mens are about the size of C. daphnis, but that species is more dis- 

 tinctly conical, more acute than this, and it lacks the subperipheral 

 creamy zone. 



Semper has stated that it is difficult to distinguish the more 

 obviously angular forms of C. lignaria from C. grandis Pfr., and he 

 has therefore united the two"; but with all respect for the opinion 

 of the distinguished German zoologist, we must still consider these 

 species perfectly distinct. It is hard to even imagine a connection. 



C. GILVA Broderip. PL 42, figs. 24, 25, 26. 



Imperforate, globose-ovate, solid. Ground-color dark chestnut, 

 begirt with an indistinct darker peripheral band, and becoming 

 lighter above, the earlier whorls whitish with a brown subsutural 

 margin. Hydrophanous cuticle forming a uniform cream-white or 

 light brown coat. 



Spire bluntly conoid, the apex very obtuse. Whorls 5i, the last 

 generally deeply descending in front. Aperture large, blue-white 

 within ; lip rather broadly reflexed, white, sometimes brown-edged. 

 Columella nearly vertical, wide, white. 



Alt. 45, diam. 40 mill. 



Alt. 42, diam. 37 mill. 



Philippines. 



B. gilvus SOWERBY, (in Coll. Cuming) ; PFR., P. Z. S. 1845, p. 

 45 ; Conchyl. (Jab., p. 179, t. 53, f. 1. REEVE, Conch. Icon., f. 7. 



Allied to C. ticaonica, but more globose, with shorter spire, more 

 uniformly distributed cuticle, whiter, wider lip, and having an in- 

 distinct darker peripheral band. 



