TuRiiiTELLA. MOLLUSCA. PECTINIBRANCHIA. 303 



Length 2k inches; white, purple, or variegated with brown ; whorls raised, 

 deeply divided by the separating line. Lister seems to have been acquainted 

 with this shell as British ; afterwards Da Costa obtained it from the coasts of 

 Lincohi and Lancashire ; Montagu received it from Kent. 



216. T. dupl'icata. — Whorls about fourteen, and spirally 

 striated, with two acute spiral ridges. 



Buccinum crassum, List. An. Ang. 160. t. iii. f. 7- Conch, t. Dxci. 59. 



Turbo dup. Linn. Syst. i. 1239. Penn. Brit. Zool. iv. 129. t. Lxxxi. f. 



112. Don. Brit. Shells, t. cxii. Turlm, Conch. Diet. 216 English 



coast, rare. 

 Length about 2h inches, thick, heavy, of a brownish colour ; the two ridges 

 are of unequal size This species was obtained by Lister from the Scar- 

 borough fishermen ; and Dr Turton announces that it was " said to have been 

 lately discovered on the western coasts by Dr Leach." 



217. T. suhtruncata. — Whorls about seven, rounded, and 

 obscurely striated spirally. 



Turbo sub. Mont. Test. Brit. 300. t. x. f. 1.— In sand, rare. 

 Length about /gths of an inch ; white; whorls from five to seven, and (in 

 a specimen in my possession) gradually tapering to an obtuse point ; outer lip 

 rounded ; pillar-lip nearly sti'aight, a little reflected, so as to form a small ca- 

 vity behind. 



218. T. elegantissima. — Whorls about ten, flat, with numer- 

 ous regular transverse grooves. 



Turbo turritus novem anfractibus striatis apertura rotunda. Walk. Test. 



Min. ii. t. ii. f. 39 — Turbo eleg. Mmt. Test. Brit. 298. t. x. f. 2 In 



deep water, not common. 

 Length about /gths of an inch, breadth about Jth of its length ; colour of 

 the shell white, glossy ; of the epidermis brown ; ridges and gi-ooves rounded, 

 slightly oblique, separating line distinct ; outer lip slightly rounded ; pillar- 

 lip nearly straight, thick, forming a slight angle auteally. It is a very strong 

 shell in proportion to its size. 



^19. T. truncata. — Whorls four or five, flat, decreasing sud- 

 denly ; apex abrupt. 



Turbo trun. Mont. Test. Brit. 300. t. x. f. 7 Common. 



Length about y jths of an inch ; white, glossy ; whorls nearly six in num- 

 ber, deeply divided by the separating line, and faintly striated transversely ; 

 aperture ovate ; piUar-lip slightly rounded, and a little reflected. 



220. T. unica. — Whorls nine, finely striated spirally, with 

 numerous undulated transverse ridges. 



Turbo turritus septem anfractibus strigatis apertura ovali. Walk. Test. 



Min, ii. t. ii. f. 40 — Turbo unicus, Mont. Test. Brit. 299- t. xii. f. 2 



Among shell-sand, rare. 

 Ijength about ^^^hs, of an inch ; white, glossy, slender ; whorls rounded and 

 deeply divided by the separating line ; aperture ovate ; the piUar-lip rounded. 



221. T. similUma. — Whorls eight, with fourteen distant 

 ridges parallel with the axis of the shell. 



Laskei/, Mont. Test. Brit. Supp. 136. Wern. Mem. i. 406. t. viii. f. 15. 

 — Shores of Jura. 



