TURBO. TURBAN. 217 



! .ire more, prominent, but occasionally all of the same 

 a, and uncertain in their number: aper- 

 ture orbicular ; the outer-lip thin and brittle, and semi-- 

 transparent : inner-lip sometimes reflected and forming a 

 slight groove behind it. 



On most sandy shores. In Dublin bay we have found it 



more than two inches long and half an inch wide, with s! v - 



teen perfect volutions : and in the cabinet of Mrs. C. W. 



labsconibe, of Exmouth, we observed a glossy transparent 



variety, which came from Scilly. v. v. 



60. Turbo Ascaris. Vermicular Turban. 



Shell extremely slender, tapering to an exceedingly fine 

 point, milk white, semitransparent : spires seven or eight, 

 rounded and well denned by a deep depression, each with 

 tour or five regular equidistant and rather deep spiral 

 grooves : aperture nearly orbicular, the inner-lip a little re- 

 jected : length not the tenth of an inch ; breadth a fourth 

 of its length. 



It is impossible to mistake this minute and very elegant 

 species for the young of T. Terebra, which is always opake 

 and horn-color, suddenly tapering to an obtuse point, with 

 the ribs coarse, three or four of them much raised above 

 the rest, aad the interstices regularly striate : the spires are 

 tilso less rounded and defined than in the present species. 



Seah'eld on the Atlantic, in Ireland : rare. v. m. 



61. Turbo nitidissmms. Transparent Turban. 

 Montagu, pi. 12. f. 1. 



Shell extremely slender, tapering to a minutely fine 

 point, white, transparent, quite smooth : spires nine, very 

 much raised and rounded, separated- by a deep line of junc- 

 tion : aperture nearly orbicular; the inner- lip a little re- 

 flected- length the eighth of an inch; breadth a fourth o: 

 its length. 



Western coasts, and Dublin bay : rare. v. m. 



62. Turbo politus. Polished Turban. 



r Pennant, pi. 82. f. 1 Dorset Cat. pi. 19. f. 15. 

 Turbo aibus. D-.mavun, pi. 177. 

 :u'li strong, ivory .white, polished, ({uite smooth, ta- 



li paring 



