BITTIUM. 155 



Closely allied to B.Jilosum, Gould, of the West Coast of Noith 

 America ; it is also very nearly related to the next species. B. 

 insculptum, Sowb. (fig. 94), is a synonym, and B. arctum, Hombr. et 

 Jacq. (fig. 96), described from a single poor specimen, is probably 

 identical ; if so its name should have precedence. 



B. PLUMBEUM, Sowb. PI. 30, fig. 23. 



Scarcely longitudinally costate, spirally striate, whorls 10, some- 

 what convex, brownish or plum color. Length, 13 mill. 



Australia. 



B. LACERTiNUM, Gould. PI. 30, fig. 100. 



AVhorls cx-enulated at the edge, with four spiral tuberculated ribs, 

 two upper ribs ajjproximate, the others more distant, with an inter- 

 stitial line, brow-nish. Length, 13 mill. 



Sydney, N. S. Wales. 



This has been considered a synonym of the next species, but I 

 think its relationship rather remote. 



B. GRANARiuM, Kicuer. PI. 30, fig. 98. 



Longitudinally costulate, crossed and cut into numerous beads by 

 spiral sculpture, base of body whorl smooth or spirally striate, 

 reddish brown or chocolate color, sometimes the beads are chestnut 

 colored on a light ground. Length, 22 mill. 



So. Australia, Tasmania. 



B. GLAREosuM, Gould. PI. 30, fig. 19. 



Longitudinally i:)licate, crossed by four spiral rows of beads, 

 suture excavated, blackish brown. Length, 5 mill. 



Loochoo and Bonin Islands. 



B. PARCUM, Gould. PI. 30, fig. 20. 



Longitudinally roundly plaited, spirally ribbed, ribs tuberculated 

 on the plaits ; whorls few, slightly ventricose, the last rather fusi- 

 form ; yellowish white. Length, 3 mill. 



Loochoo Is. 



B. PusiLLUM, Gould. PI. 31, fig. 25. 



Longitudinally about 10 ribbed, crossed by four lines on each 

 whorl, forming granules, spiral sculpture more numerous on the 

 last whorl, extending to the base ; whorls 8, convex ; fulvous. 



Length, 5 mill. 



Sandwich Is. 



