Cingula. MOLLUSCA. PECTINIBRANCHIA. 305 
8. T. f/rii— Elongated, striated transversely. lire’s Hist. Ruth. 308. 
t. xiv. f. 7* — Limestone nf the Coal Formation. 
9. ’T.elongata. — Elongated, striated spirally. Ure’s Hist. Ruth. 308. t. xiv. 
f. 11. 
10. T. constricta. — T united, smooth ; whorls eight or ten ; convex below, 
contracted above, with an adpressed crenated margin. Turbo con. Mart. Derb. 
t. xxxviii. £ 3 — Melania con. Sower. Min. ConcL t. ccxviii. f. 2 — Carbonu 
ferous Limestone. 
Gen. L. cingula. — Aperture of the shell with the peristome 
complete, being united retrally. 
* Outer lip thicleeiied by a rib. 
225. C. cimex . — Whorls four, strong ; ribbed coarsely, trans- 
versely and spirally. 
Turbo cim. Linn. Syst. Nat. i. 1233. Bon. Brit. Shells, t. ii. f. 1. Mont. 
Test. Brit. 315 — Southern coasts, not common. 
Length about |th of an inch ; white ; whorls with the separating line deep 
and ragged ; meshes of the ribs forming quadrangular pits, in six rows on 
the body-whorl, ami two on the second. 
226. C. subcarinata . — Whorls three, little produced, with 
three spiral ridges, and numerous transverse strite. 
Helix sub. Mont. Test. Brit. 438. t. vii. f. 9 — Trochus rugosus, Brown^ 
Wern. Mem. ii. 520. t. xxiv. f. 5 — Coasts of England and Ireland. 
Breadth about J^th of an inch, depressed ; glossy, frosted ; two of the spi- 
ral lines are on the lower part of the body-whorl, and one on the upper ; pil- 
lar-cavity wide and deep ; aperture oval. 
227. C. calathisca . — Whorls six, with numerous transverse 
and spiral ribs. 
Turbo cal. Laskey., Mont. Test. Brit. Supp. 132. t. xxx. f. 5 — West 
coast of Scotland and England, rare. 
Length |th of an inch ; brown ; conical ; the pits formed by the intersection 
of the ribs are more numerous than the last, being in eight rows on the body- 
whorl, and four on the next ; aperture with the outer lip denticulated within. 
228. C. striatula . — Whorls five, spirally ribbed, longitudi- 
nally striated, each terminating in a flat top. 
Turbo stri. Mont. Test. Brit. 306. t. x. f. 5 — Turbo monilis, Turton.^ 
Conch. Diet. 200. — On the English coast, rare. 
Length /^ths of an inch ; ovate, obtuse, white ; whorls with fine spiral 
striae, which, towards the upper part of each volution, rise into three mem- 
branaceous ridges ; those near the pillar are likewise elevated and strong ; the 
transverse striae are numerous, but principally obvious in the furrows, yet 
giving to the shell a pretty cancellated appearance ; aperture suborbicular, 
angulated at the upper part. 
229. C. costata . — Whorls five, spirally striated, and trans- 
versely ribbed ; a groove behind the outer lip, extending behind 
the pillar to the aperture- 
Turbo crassus, clathratus, quinque anfractibus apertura rotunda margd- 
VOL. I. U 
