TURBO. TURBAN. }$? 
rather spindle-shaped outline ; and in the inner-lip not be¬ 
ing so much spread on the pillar. 
On rocks at low water, v. v. ■ 
9. Turbo rudis. Sordid Turban. 
Donowni, pi. 33. f. 3— Linn. Trans, viii. pi. 4.f. 12, 13— 
Dorset Cat. pi. 18; f. 6 . 
Shell thick, strong, somewhat oval, rather pointed, 
smooth or very faintly striate spirally, and a little wrinkled 
longitudinally: spires five, much rounded and well defined 
by a deep separating line: color grey, greenish, reddish, 
orbrown of various shades, and sometimes handed ; inside 
colored, but generally white round the margin of the lip 
and on the pillar: aperture round-oval; the outer-lip thick, 
with a fine edge ; pillar-lip broad, white, polished, with 
generally a small puncture at the base, like an incipient 
perforation: length' three-quarters of an inch 5 breadth not 
quite so much. 
It is at'once distinguished from T. litoreus, by the tumid 
and distinctly defined volutions. 
Western coasts, and Dublin bay. v. v. 
10. Turbo tenebrosus. Dusky Turban. Fig. 3G, 37- 
Montagu, pi. 20. f. 4 —Dorset Cat. pi. 18. f. 15. 
Shell thick, conic, dark purple, often covered with a 
rough grey or dull ferruginous coat, frequently prettily 
chequered by transverse broken short bull-colored lines, 
which sometimes extend to the lip and give it the appear- 
nee ofbeing notched : spires five or six, rounded and well 
defined, the largest covering more than half the shell, 
slightly striate longitudinally, and very rarely transversely 
man obscure manner, ending in a rather obtuse point: 
aperture somewhat orbicular, very dark purple on the in¬ 
side; outer-lip thin, but gradually dilating towards the pil¬ 
lar, which is uniformly of a dark glossy purple : length, 
three quarters of an inch ; breadth live-eighths. 
It much resembles the T. rudis, but is distinguished by 
the dark purple hue, thin outer-lip which does not suddenly 
thicken from <he margin, but especially in the dark purple 
color of the inside, which always extends over the flattened 
surface of the pillar. 
s 3 
It 
