CiNGULA. MOLLUSCA. PECTINIBRANCHIA. 309 



Turbo vit. Mont. Test. Brit. 321. t. xii. f. 3 — In Cornwall and Zetland, 



rare. 



I^ength ith of an inch; breadth Jtlisless; smooth, glossy, subcylindric; 



separating line deep and oblique ; aperture large ; outer lip rounded, slightly 



compressed in the middle ; jiillar-lip a little reflected, forming behind a small 



cavity This seems a rare shell. Two examples occurred to me among sand 



from Bressay, Zetland. 



248. C. unlfasciata. — Whorls five, smooth, wliite, with one 

 or two spiral bands of purplish brown. 



Turbo uni. Mont. Test. Brit. 327. *• xx. f. G — On the English coast, rare- 

 Length about gth of an inch; breadth about one-half less ; conical, thick ; 

 whorls little raised, divided by a small line ; aperture wide ; outer \\\) slightly 

 reflected. 



249. C. c'mgilla. — Whorls six, slightly raised, spirally striated ; 

 the separating line deep. 



Turbo trifasciatus, Adams, Linn. Trans, v. ii. t. i. f. 12. B. — T. cing. Mont. 

 Test. Brit. 328. t. xii. f. 7- — T. vittatus, Don. Brit. Shells, t. clxxviii. 



f. 1 T. graphicus, Turton, Conch. Diet. 200. f. 34. Brown, AVern. 



Mem. ii. 521. t. xxiv. f. 6. — Among the roots of fuci. 

 Length ith of an inch, breadth §ds less ; subpellucid ; with alternate spiral 

 bands of horn-colour and chesnut-brown, becoming obsolete towards the apex ; 

 the separating line appears deep, in consequence of the ujiper margin of each 

 volution suddenly bending inwards ; aperture oval ; outer lip nearly straight 

 retrally. 



250. C. alba. — Whorls six, smooth, with about sixteen trans- 

 verse ribs on the body-whorls. 



Turbo albus, Adams, Linn. Trans, iii. 66. t. xiii. f. 17, 18 — Roots of fuci, 

 common. 



Length about y>o th of an inch, breadth one-half less ; smooth, glossy, subpel- 

 lucid, pale brown, when recent, or with spiral brown bands ; whorls not much 

 rounded, smooth, glossy ; the ribs, which are rounded and slightly waved, 

 sometimes do not reach even to the body-whorl ; the shell then appearing not 

 unlike C. interrupta ; aperture suborbicular ; pillar-lip a little reflected. — This 

 species has probably been confounded with C. parva, to which it bears a con- 

 siderable resemblance. It is, however, more rounded in the aperture, and pro- 

 duced in the spire, and the outer lip is thin. 



251. C. semistriata. — Whorls five or six, rounded, smooth in 

 the middle, and spirally striated on both sides. 



Turbo semi. Mont. Test. Brit. Sup. 136 — South coast of Devon. 

 Length ith of an inch ; breadth one-half less, conical ; apex obtuse ; white ; 

 whorls well defined by the sejjarating line ; the sti-ite extend to the body- 

 whorl, as far as the junction of the lip; aperture subovate, angulated at the 

 retral end. 



252. C. dispar. — Whorls fovn-, the first large ; striated spiral- 

 ly, wrinkled obliquely, and subcarinated at the base. 



Turbo dispar, Morit. Linn. Trans, xi. 195. t. xiii. f 4. — Found at Poole, 



by the Rev. Mr Bingley. 



Length ith of an inch ; breadth very little less ; grey ; upper whorls small, 



usually worn ; aperture suborbicular, within of a dark purple, with one pale 



band near the lower extremity The opinion expressed by Dr Turton, that 



