860 TURBO. 



ther more than one-third of the length ; live shells are co- 

 vered with a brown epidermis, but when stripped of this 

 they are white, glossy, and pellucid ; the upper part of each 

 whirl is faintly ribbed longitudinally, and the whole shell is 

 regularly and beautifully covered with crowded transverse 

 striae. 



cosTATUS. 105. Shell sub-turreted, minute, with 

 the whirls obliquely ribbed and transversely 

 striated ; aperture with a thick sulcated 

 rim. 



Turbo costatus. Adams in Lin. Trans, iii. p. 65. t. 13. 

 f. 13 and 14. Montagu Test. p. 311. t. 10. f.6. Maton 

 and Racket, in Lin. Trans, viii. p. 174. Dorset Cat. 

 p. 51. t. 19. f. 5. 

 Turbo crassus. Adams's Micros, p. 638. t. 14. f. 20. 

 Walkers Minnie Shells, f. 47. 

 Inhabits the coasts of England and Wales, Motitagu, Sjc. 

 Shell scarcely one- eighth of an inch long, and one-lhird as 

 broad, solid, glossy, sub-pellucid, white, and rather obtuse 

 at the apex ; it is composed of four or five rounded whirls, 

 with strong oblique undulated ribs, and finely striated trans- 

 versely ; aperture nearly orbicular, oblique, and bordered 

 with a thick sulcated rim. 



UNicus. 106. Shell acuminated, minute, with nine 

 very convex whirls, and cancellated striae. 



Turbo unicus. Montagu Test. p. 299. t. 12. f. 2. Maton 



and Racket, in Lin. Trans, viii. p. 174. 

 Turbo albidus. Adams's Micros, p. 637- 1. 14. f. 17. 

 Walker's Minute Shells, f. 40. 



Inhabits the sea at Sandwich. Mr. Boys. 



Shell one-fifth of an inch long, very narrow in proportion to 

 the length, and tapering to a fine point ; it has nine glossy 

 pellucid white very convex whirls, with slender longitudinal 

 ridges, and crossed by extremely fine striae; aperture sub- 

 orbicular. 



INDISTTNCTUS. 107. Shell sub-cylindrical, minute, 

 with longitudinal ribs and punctured trans- 

 verse striae in their interstices. 



Turbo indistinctus. Montagu Supp. p. 1 29- 



Inhabits • 



Shell one-tenth of an inch long, and one-third as broad. Mr. 



