CiNouLA. MOLLUSCA. PECTINIBRANCHIA. 307 



235. C. semicostata. — Shell short, conical ; whorls five, spi- 

 rally striated, 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 defined by the separating 



line ; neither the strioe nor ribs conspicuous on the upper whorls ; the ribs do 



not extend to the lower part of the body-whorl, where the spiral striae are 



most conspicuous ; aperture suborbicular ; pillar-lip a little reflected. 



236. C. Bryerea. — Shell conical; whorls seven, with about 

 eighteen transverse ribs ; destitute of spiral strise. 



Turbo B. Mont. Test. Brit. 313. t. xv. f. 8.— In shell-sand, rare. 

 Length about ith of an inch ; white, glossy ; whorls rounded, well defined 

 by the line of separation, which scarcely interi'upts the ribs ; aperture oval, 

 patulous ; pillar-lip slightly reflected. 



237. C. striata. — Whorls six, rounded, regularly striated spi- 

 rally, Avith 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. 



Mrnit. Test. Brit. 312.^Aniong sea-weeds, common. 



Length upwards of ith of an inch ; cuticle brownish ; whorls with a deep 



separating line ; aperture oval, narrow retrally ; outer lip slightly thickened. 



238. C. disjuncta. — Whorls six, smooth ; with the deep line 

 of separation flat or concave. 



Turbo dis. Laskey., Mont. Test. Brit. Supp. 128. Wern. Mem. i. 405. 

 t. viii. f. 3. — Belton Sands, Dunbar. 

 Length about ith of an inch, slender, white ; whorls much rounded, divid- 

 ed by a broad and deep line of separation ; aperture nearly orbicular ; pillar- 

 lip reflected, forming a small cavity. 



'-'^"* Outer lip not thickened by a rib. 



239. C. labiosa. — Whorls seven ; the three largest faintly 

 ribbed transversely ; aperture patulous. 



Turbo lab. M&nt. Test. Brit. 400. I. xiii. f. 7 — T. membranaceus, Adams., 

 Linn. Trans, v. ii. t. i. f. 14-15 — English coast, not uncommon; rare 

 in Scotland. 



Length about i^gths ; breadth less than i\ihs ; subpellucid, horn-coloured ; 

 whorls but little raised, the upper ones smooth, the under ones with about 

 fifteen faint ribs ; aperture oval, with the outer lip thin ; the pillar-lip much 

 reflected, forming a cavity behind. — This shell varies much in its thickness, 

 and in the disposition or presence of the ribs. 



240. C. ventricosa. — Whorls six, tumid, smooth and glossy. 



T. quinque anfractibus ventricosis apertura subrotunda, Walk. Test, 



Min. 10. t. u. f. 36 T. vent. Mont. Test. Brit. 317- t. xii. fi 13.— 



English coast, common. 

 Length ith of an inch ; breadth |ds less, of a horn colour, with minute lines 

 of growth'; aperture suborbicular ; pillar-lip reflected, forming, behind, a small 

 cavity ; lid thin, wrinkled, and corneous. 



241. C. auric idaris.—^Whorh five, rounded; aperture ear- 

 shaped ; inner lip with an angle. 



Turbo aur. Mont. Test, Brit. 308 — Near Southampton, rare. 



u2 



