210 TURBO, TURBAN. 



orbicular, inclining to oval : length two-tenths of an inch ; 

 breadth hardly a third of its length. 



Sandwich and Dublin bay rare. v. m. 



4\. Turbo arenarius. Sand Turban. 



Helix decussata. Montagu, pi. 15. f. 7 Dorset Cat 

 pi. 19. f. 17- 



Shell slender, tapering to a fine point, strongly and re- 

 gularly striate longitudinally, and crossed by very fine trans* 

 verse lines : spires eight or nine, very little raised : aper- 

 ture somewhat oval, contracted at both ends ; the pillaivlip 

 slightly reflected, but not perforated : length three-lentils 

 of an inch 5 breadth hardly one tenth. 



Western coasts and Dublin bay. v. m. 



42. Turbo decussatus. Lace Turban, 

 Montagu, pi. 12. f. 4- Walker, f. 52. 



Shell conic or somewhat cylindrical, ending in a rather 

 obtuse point, glossy-white when fresh: spires five, rounded 

 and well defined, strongly striate longitudinally, and crossed 

 by extremely fine regular transverse lines : aperture oval, 

 contracted at one end ; the outer-lip rather thin ; inner-lip 

 not reflected nor perforated : length the eighth of an inch j 

 breadth a third of its length. 



Western coasts, and Dublin bay. v. v. 



43. Turbo Cimex. Latticed Turban. 



Da Costa, pi. 8. f. 6 and 9 Donovan, pi. 2. f. 1 Dor* 

 set Cat. pi. 14. f. 6 and 9, 



She}! thick, strong, oblong-oval, ending rather obtusely, 

 glossy-white or yellowish : spires four, a little rounded, 

 and well defined by the separating line, strongly and 

 coarsely ribbed both circularly and longitudinally, forming 

 deep square punctures in the interstices, of which there 

 are six rows on the larger volution, two on the next, and 

 one on the third : aperture roundish-oval, the outer-lip 

 thick, with six obscure teeth on the outer margin, formed 

 by the strpng transverse ribs ; pillar-lip rather fiat, not re-r 

 fleeted or peri'oiated, but furnished with a groove which 

 extends obliquely from the lower and outer angle half way 

 found the back, and cutting this ar.gle into a kind of tu? 



bercle ; 



