BULLA. 347 



close, fine, crenulated spiral sir ice. Apical umbilicus about 2 mill, 

 -wide, not spirally grooved within ; lip thin at its origin on the ver- 

 tex, curving strongly forward above, straightened in the middle ; 

 columella short, concave, the edge of the reflexed crescentic callus 

 appressed ; parietal callus light. Alt. 53, diam. 30 mill. 



Philippines and Island of Annaa, on the reefs (Cuming) ; Port 

 Jackson. 



This variety seems to be less narrow than the type, and the um- 

 bilicus is wider. The specimen described above is from Port Jack- 

 son, collected by Godeffroy. 



A. ANGASI Pilsbry. PI. 36, figs. 32, 33. 



Shell thick, subcylindrical, rather short, posteriorly subattenuated, 

 anteriorly rounded, smooth, whitish, variegated and clouded with 

 red band and broad spots, with white angular lines; aperture white, 

 outer lip thickened within, inner lip strongly arched. (Sowb.) 



Middle Harbor, Port Jackson (Angas). 



B. solida A. Ad. MS., SOWB., Conch. Icon., f. 10. B. solida 

 Gmel. MS. ANGAS, P. Z. S., 1867, p. 226. Not B. solida Gmelin. 



Among the many B. solida before me, none show any approach 

 to the style of painting of this species, which I know only from the 

 works of Sowerby and Angas. The latter author says : a prettily 

 painted species, peculiarly marked with large angular blotches of 

 rose liver-color on a grayish- white ground. Length 1 inch. 



B. TENUISSIMA Sowerby. PI. 34, figs. 10, 11. 



Shell ovate-oblong, subcylindrical, subpellucid, very thin, pale 

 brown, variegated with subquadrate, dull brown spots, principally 

 arranged in four rows, umbilicus wide, margin of the aperture rather 

 straight, columella margin white, flat, arched, narrow. (Sowb.~). 



Swan River, Australia. 



B. tenuissima SOWB., Conch. Icon., f. 4, Jan., 1868. 



Remarkable for the thinness of its half-transparent texture. 

 (Sowb.~). 



B. INCOMMODA Smith. PI. 39, fig. 72. 



Shell small, narrowly umbilicated, ovate, white, shining, sculp- 

 tured above and below with few transverse striae, striated with lines 

 of growth ; apex very narrowly perforated. Aperture narrow, a 

 little dilated beneath, produced above the vertex above ; columella 



