44 COCHLOSTYLA-CANISTRUM. 



hand inside ; peristome well expanded, thick, white. Columella 

 vertical, indistinctly or more or less obviously folded. 



Alt. 33, diam. 19 mill. 



Alt. 39, diam. 19 mill. 



Alt. 33, diam. 20 mill. 



Luzon, Ticao, Masbate, Philippines. 



Bid. ovoideus BRUG., Encycl. Meth. i, p. 335, 1792. SOWB., 

 Conch. Illustr. f. 53, 105. B. hizonicus SOWB., P. Z. S., 1833, 

 p. 73. REEVE, Conch. Icon. f. 55. B. coster ii EYD. in Guer. Mag. 

 de Zool. t. 116, f. 2. B. euryzonus PER., Zeitschr. f. Mai. 1847, p. 

 147. PHIL., Abbild. iii, t. 7, f. 10. CocJilostyla ovoidea SEMPER, 

 Reisen, p. 220. HIDALGO, Journ de Conch. 1887, p. 179. 



The typical ovoidea is represented in figures 13, 16. This is 

 varied by the addition of a brown band covering the white of 

 the body whorl except at suture and base (fig. 14) ; and 

 from this to the form called B. euryzonus (figs. 10, 11, 12, 15) the 

 transitions are abundant. In the typical euryzonus the body-whorl 

 is encircled by three broad dark zones, the lower one sometimes 

 extending to the columella ; the cuticle is yellow, with a white sub- 

 sutural line or band. 



C. BALANOIDEA Jonas. PI. 6, figs. 17, 18, 19, 20. 



Imperforate, oblong-conic, solid. Ground-color yellowish, begirt 

 ivith three dark chestnut zones, one bordering the suture, one above and 

 the third beloiv the periphery ; a small basal tract is vivid green. 

 Hydrophanous cuticle thin, white, worn from the specimens before 

 me except for a series of small patches along the subsutural dark 

 band, and some whitish streaks behind the lip. The upper two 

 bands ascend the spire. 



Spire elevated, apex obtuse, whitish. Whorls 6 -, slightly convex. 

 Aperture shorter than the spire, oblique, white inside ; peristome 

 thick, broadly expanded, white edged with brown. Columella 

 calloused, white, vertical and straight. 



Alt. 43, diam. 25 mill. 



Mindoro, Philippines. 



B. balanoides JONAS, P. Z. S., 1842, p. 188. PHIL., Abbild. ii, 

 Bui t. 6, f. 2. REEVE, t. 85, f. 630. PFR., Monogr. ii, p. 33. 



This solid, oblong species has some resemblance to the trifasciate 

 variety of C. ovoidea, but it differs in the thicker, brown-edged lip, 



