History of British animals - University of Guam Marine Laboratory

Cingcjla. MOLLUSCA. PECTINIBRANCHIA. 307235. C. semicostata.— Shell short, conical ;whorls five, spirallystriated, with abbreviated transverse ribs.Turbo elegans, Adams, Linn. Trans, iii. 66. t. xiii. f. 31-32.— T. sem. Mont.Test. 326. t. xxi. f. 5.—Coast of Devon and Dunbar.Length half a line ; white ; whorls rounded, well denned by the separatingline ;neither the strice nor ribs conspicuous on the upper whorls ; the ribs donot extend to the lower part of the body-whorl, where the spiral striae aremost conspicuous ; aperture suborbicular ;pillar-lip a little reflected.236. C. Bryerea.— Shell conical; whorls seven, with abouteighteen transverse ribs ;destitute of spiral striae.Turbo B. Mont. Test. Brit. 313. t. xv. f. 8.—In shell-sand, rare.Length about Ath of an inch ; white, glossy ; whorls rounded, well definedby the line of separation, which scarcely interrupts the ribs ; aperture oval,patulous ; pillar-lip slightly reflected.237. C. striata.—-Whorls six, rounded, regularly striated spirally,with transverse obsolete ribs at the top of each volution.Turbo sex anfractibus reticulatis apertura ovali submarginata, Walk~Test. Min. 13. t. ii. f. 49.—T. striatus, Adams, Linn. Trans, iii. 66.Mont. Test. Brit. 312— Among sea-weeds, common.Length upwards of |th of an inch ; cuticle brownish ;whorls with a deepseparating line ; aperture oval, narrow retrally; outer lip slightly thickened.238. C. disjuncta.— Whorls six, smooth ;with the deep lineof separationflat or concave.Turbo dis. Laskey, Mont. Test. Brit. Supp. 128. Wern. Mem. i. 405.t. viii. f. 3.— Belton Sands, Dunbar.Length about Ath of an inch, slender, white ; whorls much rounded, dividedby a broad and deep line of sepai'ation ; aperture nearly orbicular ; pillarlipreflected, forming a small cavity.Outer lip not thickened by a rib.-239- C. labiosa.— Whorls seven ;the three largest faintlyribbed transversely;aperture patulous.Turbo lab. Mont. Test. Brit. 400. t. xiii. f. 7—- T. membranaceus, Adams,Linn. Trans, v. ii. t. i. f. 14-15 English coast, not uncommon; rarein Scotland.Length about T 4 oths ; breadth less than T-5 ths ; subpellucid, horn-coloured ;whorls but little raised, the upper ones smooth, the under ones with aboutfifteen faint ribs ;aperture oval, with the outer lip thin ; the pillar-lip muchreflected,and in the disposition or presence of the ribs.forming a cavity behind. — This shell varies much in its thickness,240. C. ventricosa.— Whorls six, tumid, smooth and glossy.T. quinque anfractibus ventricosis apertura subrotunda, Walk. Test.Min. 10. t. ii. f. 36—T. vent. Mont. Test. Brit. 317- t. xii. f. 13.—English coast, common.Length |th of an inch ; breadth §ds less, of a horn colour, with minute linesof growth"; aperture suborbicular ;pillar-lip reflected, forming, behind, a smallcavity lid ; tbin, wrinkled, and corneous.241. C. auricidaris.— Whorls five, rounded; aperture earshapedinner ; lip with an angle.Turbo aur. Mont. Test. Brit. 308 Near Southampton, rare.U 2