378 RISSOINA. 



R. FIMBRIATA, Souverb. PI. 68, fig. 3. 



Solid, white, rather closely longitudinally costate, base spirally 

 tubercularly costate ; whorls 10, planoconvex, suture undulated ; lip 

 fimbriately varicose. Length, 6'5 mill. 



Ins. Art, New Caledonia. 

 R. RISSOI, Audouin. PL 57, fig. 78 ; PL 55, fig. 20 ; PL 68, fig. 6. 



White, longitudinally flexuously costate, with wider intervals, 

 base with a spiral rib, and no other spiral sculpture ; whorls 9, 

 somewhat convex ; lip varicose. Length, 6'5 mill. 



Red Sea, Australia. 



The latter locality is for E. crassa, Angas (figs. 20, 6), which is a 

 synonym. 



R. INFRASTRICTA, Garrett. PL 68, fig. 8i). 



Thick, shining, white, with a few large, longitudinal ribs, no 

 spiral sculpture ; whorls 5, strongly convex, restricted at the base 

 and slightly so at the suture ; lip varicose. Length, 2 mill. 



Viti Is. 

 R. MERCURIALIS, Watson. PL 54, fig. 14. 



White, with about 15 narrow, rounded, subflexuous ribs, contin- 

 uous from whorl to whorl, terminating in a large funicular spiral 

 rib below, the interstices finely, slightly, spirally striate, three of 

 the striae at the base stronger; whorls 82, slightly convex, with 

 moderate suture ; lip varicose. Length, 4 mill. 



Cape York, Australia. 

 R. SCALARIFORMIS, Watson. PL 54, fig. 1 1. 



White, with 12-13 narrow longitudinal, flexuous ribs and much 

 wider furrows, with scarcely visible spiral stria?, base with a stout 

 spiral funiculum ; lip varicose. Length, 2'5 mill. 



Honolulu, Sandwich Is. 

 R. DUCLOSI, Montr. PL 56, fig. 49. 



White, a little shining, longitudinally, obliquely, subdistantly 

 costate, the costse less distinct on the lower whorls, nodosely tuni- 

 culate and finely spirally striate below; whorls 8-8 2 , planoconvex, 

 with moderately impressed suture ; lip acute, varicose. 



Length, 5 mill. 



Ins. Art, New Caledonia. 

 R. GRADATA, d'Orb. PL 68, fig. 84. 



Shell pupoidal, strong, white, longitudinally, obliquely, undulately 

 costate, base with several spiral riblets ; whorls 6, turreted, suture 

 undulated, channeled ; peristome thick. Length, 2 mill. 



Jamaica. 



