189 



terminating in a fine point and girt with numerous 

 raised spiial striae, of which three are usually more 

 prominent, reddish or purplish brown (often light and 

 variegated with darker shades) ; aperture orbicular 

 (subquadrangular in the young), outer lip round and 

 thin, pillar lip nearly straight, li. breadth at base I. 

 Devonshire. 



* T. BICINGULATA. Lam T. EXOLETA. Fl. List, 

 t. 592. /. 60. TURBO CINCTUS. Don. t. 22. Da 

 Cos. t. l.f. 8. Mont. p. 295. Turreted, very finely 

 striated transversely, marbled with brown white and 

 rufous, whorls convex, with two broad prominent 

 rounded transverse belts. 2. Lincolnshire and Lan- 

 cashire, (fide Da Costa.) a doubtful species. 



T. ELEGANTISSIMA. F.p.303. TURBO E. Mont. p. 

 298. 1. 10./. 2. D.p.856. Lin. T.8.p.2Q9(Walk. 

 f. 39.) TURBO ACUTUS. Don. t. 179. f. 1. Glossy, 

 semipellucid, white, with from nine to fifteen flat spires 

 well defined by the separating line and terminating in 



* T Duplicata. (f. p. 308. Lam. 1. Turbo. D 

 of Linnean writers) rests on too doubtful authority as a 

 native species, to be inserted in our catalogue. 



