15ULLA. 347 



close, fine, crenulated spiral sfricc. Apical umbilicus about 2 mill, 

 wide, not spirally grooved witbin ; lip tbin at its origin on tbe ver- 

 tex, curving strongly forward above, straigbtened in tbe middle; 

 columella sbort, concave, tbe edge of the reflexed crescentic callus 

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



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

 Jackson. 



This variety seems to be less narrow tban tbe type, and tbe um- 

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

 son, collected by Godeffroy. 



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



Sbell tbick, subcylindrical, ratber sbort, posteriorly subatteiiuated, 

 anteriorly rounded, smootb, wbitisb, variegated and clouded witb 

 red band and broad spots, witb wbite angular lines; aperture wbite, 

 outer lip tbickened witbin, inner lip strongly arched. (Soivb.) 



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 tbe 

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

 painted species, peculiarly marked witb large angular blotches of 

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



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



Shell ovate-oblong, sul)cylindrical, subpellucid, very tbin, pale 

 brown, variegated with subquadrate, dull brown spots, principally 

 arranged in four rows, umbilicus wide, margin of tbe aperture ratber 

 straight, columella margiji 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, wbite, shining, sculp- 

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

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

 little dilated beneath, produced above the vertex above ; columella 



