214 TURBO. TURBAN. 



lar : length a. quarter of an inch ; breadth one third of its 

 length. 



Found hy Mr. Bryer, at Weymouth. 



52. Turbo denticulatus. Dentlcled Turban. 

 Montagu, p. 315. 



Shell conic, rather obtuse, white, semitransparent: spires 

 six, with nine or ten strong coarse longitudinal ribs, not 

 undulate nor striate in the interstices, but running ob- 

 liquely, and forming strong tubercles round the lines of 

 junction : aperture orbicular ; the outer-lip not margined, 

 but thickened by a rib ; pillar-lip smooth, indented, with a 

 small tubercle or two at the base close to the ribs : length 

 not quite a quarter of an inch j breadth half its length. 



From the last it differs, in having fewer ribs, which run 

 obliquely and are not undulated, in wanting the fine trans- 

 verse striie between them, and in the aperture which is not 

 strictly margined, but thickened with a rib behind it. 



Found at Weymouth, by Mr. Bryer. 



53. Turbo Bryereus. Bryer s Turban. 

 Montagu, pi. 15. f. 8 Dorset Cat. pi. 19. f. 7. 

 Turbo costatus. Donovan, pi. 1 78. f. 3. 



Shell strong, conic or rather elongated, pointed, glossy- 

 white : spires seven, rather rounded and well defined, with 

 seventeen or eighteen fine longitudinal ribs, which are 

 scarcely interrupted by the line of junction, and not striate 

 transversely : aperture oval, the outer-lip strong, not mar- 

 gined nor reflected ; pillar-lip smooth, a little turned back, 

 but not perforated behind it : length hardly a quarter of an 

 inch ; breadth a third of its length. 



Variety. With stronger and fewer ribs, not exceeding 

 ten or twelve in number. 



Weymouth, Margate, and Dunbar. v. m. 



54. Turbo costatus. Ribbed Turban. 



Montagu, pi. 10. f. 6 Linn. Trans, iii. pi. 13. f. 13, 14 

 Dorset Cat. pi. 19. f. 5 Walker, f. 47. 



Shell conic, a little tapering, rather obtuse, glossy-white, 

 semitransparent : spires live, rounded and well defined by 

 the separating line, with eight or nine strong distant lon- 

 gitudinal 



