TURBONILLA. 331 



Turbonilla interrupta. 



Fig. 173. 



Shell small, subulate, brownish-white, reticulated with numerous ribs and re- 

 volving lines, which are interrui^ted by the ribs, and the faintly colored bands. 



Tuiritella interrupta, Totten, Sillim. Journ. xxviii. 352, fig. 7. — Adams, Bost. Journ. 



Nat. Hist. ii. 273. — Gould, Iuv. 1st ed. 2G8, fig. 17.3. -De Kay, N. Y. Moll. 112, 



pi. 6, fig. 123. 

 Turbonilla iiiterrupta, Stijipsox, Check Lists, 5. 



Shell small, very slender and pointed, pale brownish-wliite, glossy; 

 whorls eio-ht or ten, slic-htly convex, the sntnre well-defined, 



° ' *= -^ '. . . ' Fig. 60L 



on which are from twenty-five to thirty straight, blunt ribs, 

 crossed by about fourteen revolving lines, which are inter- 

 rupted by the ribs ; these lines are arranged in pairs, but 

 so close to each other as not always to be distinguished, and 

 would usually be regarded as one ; on the anterior half of t. inter. 

 the lower whorl the ribs vanish, and the fine revolving lines "''""" 

 are uninterrupted. In fresh specimens may be seen a purplish band 

 just below the suture, and on the anterior whorl two faint yellow 

 ones ; aperture about one sixth the length of the shell, ovate, sharply 

 angular behind ; outer lip sharp and simple, inner lip slightly everted. 

 Length, one fourth of an inch ; breadth, one tenth of an inch ; di- 

 veraence, twelve degrees. 



First found by Colonel Totten in the harbor of Newport, Rhode 

 Island ; and since found by Professor C. B. Adams, in Dartmouth 

 Harbor, by dredging below low-water mark. He has also found it 

 in New Bedford Harbor. Four fathoms near East Boston. 



It is readily recognized by its slender, pointed, glossy appearance, 

 and its reticulated surface. Several recent and fossil sj^ecies re- 

 semble it in shape and size, among which are Turbo elegit ntissiinits, 

 Montagu, TiirritcUa cequalis, Say, and T. laqueata, Conrad. 



This species does not belong to the genus Turrilella, but will 

 probably come mider the genus Eulima of Risso. 



Turbonilla nivea. 



Chemnllzia nivea, Stimpson, Proc. Bost. Soc. iv. 114 (1831); Shells of New England, 40. 

 Turbonilla nicea, Sti.mpsox, Check Lists. 5. 



Shell aciculated, sub-cylindrical, white, shining ; whorls eleven, 

 flattened, longitudinally plicate ; folds straight, interstices perfectly 



