336 Kl-SOIA. 



wider intenpaoeB, DO spiral sculpture; whorls 4, tin- apex blunt, 

 the others very convex, with deep suture; lip rather thin, without 

 a varix. Length. :>:> mill. 



Off New England ; deep sea. 

 II. IIAKI-A, Verrill. PI. 07, fig. 82. 



Umbilicated, thin, with numerous longitudinal plications, and no 

 spiral sculpture ; whorls ">, very convex, rapidly increasing, with 

 deep suture; aperture small, round, lip thin. Length, "> mill. 



Off New England ; deep sea. 



R. MUNDA, Monts. (unfigured.) N/< //?/. 



Section MANZONIA, Brusina. 1870. 



R. COSTATA, Adams. PL 63, fig. 66. 



Longitudinally, distantly costate, costaB acute, elevated, nodose 

 above, spirally densely lirate ; whorls convex, round-shouldered, 

 sutuiv deeply incised ; lip double, continuous, the internal smooth, 

 rounded, the external widely retiexed, thinly sulcate. 



Length, 3 mill. 



K a rope. 



The synonyms are R. exigua, Mich., R. carinata, Phil.. Turbo 

 plicatus, Miihlf., Turbo albus, Donovan. 



II. SIMIKICA, Leche. PL 65, fig. 21. 



Turreted, elevated, brownish ; whorls 5, round-shouldered, with 

 U-lU obtuse ribs, vanishing on up|)cr part of body whorl, belo\\ are 

 a few raised spiral lines ; lip simple, edentulous. Length, 5 mill. 



Arctic Ocean, N// 

 II. MI KAIMI.IS, Man/oni. PL 65, fig. 'I'l. 



lariform, subaiiLrulate in the middle, narrowly rimate ; whorls 

 . TV convex, with deep suture, with narrow, distant longitudi- 

 nal ribs, the wider interstices closely spirally striate; yellowish 

 violet. Length, 2'") mill. 



Canary Is. 

 II. GfiBBKB, Watoon. PL 85, figs. _'::. 24 



Widely umbilicated, gradate, solid, white or yellowish, sometimes 

 mop- or le*s distinctly lour banded with chestnut; whorls 4'.-. r ), 

 convex, with stout, rounded ribs, forming AH undulated shoulder or 

 suture above; umbilicus defined by a rib; lip continuous, duplicate. 



Length, - mill. 



mill Pin. S<l/irf<). 



