r.irniM. i:>7 



I;, n BVUM, Watson. IM. 81, fig, '-'7. 



( 'lathrate by !'_' I > narrow rili>, an<l t hive narrow -piral rill-t-.. 

 tin- inter-rrii,,!!- nodulous the wide interspace! witli (l<'cii~-;itiirj 

 microscopic stria-, whorl.- sliglitlv shouldered, liodv whorl with 

 .-everal spiral ridges liclow the middle; dark chestnut c<lored. 



Length, 2-7 mill. 



Sydney, \. 8. Wales. 



I. \ \NTIMM, Watson. IM. 30, fig. 24. 



Less .-houldcrcd and not |iiitc so stout as the preceding .- -p.-ei,-, 

 with about 1<S rihs, base longer and more attenuated, no microscopic 

 >tri;e; -hell thin, ochraceous. Length, '.]'> mill. 



Torres /Strait, X. E. A uAlrnl'm. 



\\. I'ERPARvuLUM, Watson. PI. 31, fig. 29. 



Shell only about half the size of B.furvum, but so close to it in 

 form and sculpture that I suspect that it will prove a minor form of 

 that species. The small differences are comparative only and can 

 be seen by inspecting the respective figures. Yellowish, or pale 

 chestnut, becoming nearly white below, sometimes chestnut or white 

 throughout. Length, 1/5 mill. 



N. K Australia to Sandwich Is. 



I>. I.KUCOCEPHALUM, Watson. PI. 31, fig. 30. 



About 12, rounded ribs, with wider interspaces, crossed by three 

 narrow spiral rid-es, the intersections nodulous, whorls a little 

 shouldered as in the preceding species, but not so high, bast- and 

 aperture also shorter; yellowish or whitish. Length, 2*5 mill. 



Off Honolulu^ Siitiitii'irh I*. 



Very like the preceding, with wider, fewer ribs and shorter l>a-<\ 



15. PORCELLANUM, \Vats.m. PL 31, fig. 28. 



Whorls slupiiiLrly shouldered above and below, the wide, flat- 

 tened middle space only bearing distant narrow Longitudinal ribs, 

 base of body whorl with three spiral ridges, porcellaiious white and 

 i!-loy, apex yellowish chestnut with a whitish tip. 



Length, 3'75 mill. 



Cape York, X. E. Ati*tr.ili't. 



Section CKKITIIIDH-M, Monts., 1884. 



B. srr.MAMiu.ATiM. Kayneval. IM.. l )( .), iig. M. 



Whorls ]'2, convex, with deep suture, with eight longitudinal 

 ribs and much wider interspaces, erossi-d by live revolving rildets. 



