TURBO. TURBAN. 
,210' 
orbicular, inclining to oval: length two-tenths of an inch ; 
breadth hardly a third of its length. 
• Sandwich and Dublin bay; rare. v. m, 
41. Turbo arcnarius. Sand Turban. 
Helix decussata. Montagu , pi. 15. f. 7— Dorset Cat, 
pi. 19. f. 17. 
jSjiell slender, tapering to a fine point, strongly and re¬ 
gularly striate longitudinally, and crossed by very fine trans¬ 
verse, iin.es : spires eight or nine, very little raised : aper¬ 
ture somewhat oval, contracted at both ends ; the pillar-lip 
slightly reflected, but not perforated : length three-tenths 
of an inch ; breadth hardly one tenth. 
Western coasts and Dublin bay. v. ?n. 
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; 
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. 
Shell 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 
tnicx, with six obscure teeth on the outer margin, formed 
oy t]ie strong transverse ribs ; pillar-lip rather fiat, not re¬ 
jected or perforated, but furnished with a groove which 
extends obliquely from the lower and outer angle half way 
round the back; and cutting this angle into a kind of tu¬ 
bercle ; 
