308 MOLLUSCA. PECTINIBRANCHIA. Cingdla. 



Length |ths of an inch ; breadth about |ths ; conic, smooth, subpellucid, 

 horn-coloured ; whorls deeply divided by the separating line ; apex moderate- 

 ly pointed ; inner lip forming an angle about the middle, behind which is a 

 narrow cavity. Montagu compares this species to Limnea fossaria, to which, 

 it may be added, some of the numerous varieties of Turbo quadrifasciatus bear 

 a close resemblance, and with which the present species is probably con- 

 nected. 



- 242. C.putta. — Whorls five, rounded, the first large ; striated 

 or spotted with pink. 



Turbo pullus, Linn. Syst. i. 1233. Don. Brit. Shells, t. ii. f. 2-6. Mont 

 Test. Brit. 319.— On fuci, on the English and Irish coasts. 

 Length |ths of an inch ; breadth one-half less, smooth, glossy, finely va- 

 riegated with pink, purple, or brown ; strong ; whorls decreasing rapidly, deep- 

 ly divided by the separating line ; aperture suborbicular ; pillar-lip reflected, 

 and forming behind a small cavity ; operculum strong, thick, testaceous, very 

 convex, white and smooth externally ; the interior part, when separated from 

 the animal, is a little concave, and has a small and singular spiral turn near 

 one end. 



243. C. ulvce. — Whorls five to seven, nearly flat ; outer lip 

 even retrally. 



Turbo ulvfe, Penn. Brit. Zool. iv. 132. t. lxxxvi. f. 120. Mont. Test. Brit. 

 313. — In muddy inlets, common. 

 Length fths, breadth £th of an inch ; corneous, thick, opake ; whorls with 

 a distinct separating line, and slightly wrinkled across by lines of growth ; 

 outer lip nearly straight retrally ; pillar-lip reflected and forming behind a 

 slight longitudinal cavity ; operculum radiated with arched striae from the 

 inner margin. 



244. C. suburnbtlicata. — Whorls five to seven, rounded, the 

 first occupying above half the length of the shell. 



Turbo sub. Mont. Test. Brit. 316 — About the roots of fuci, common. 

 Length T 3 5 ths, breadth ^th of an inch ; greenish-grey, smooth, glossy ; 

 whorls well defined by the separating line ; apex obtuse ; aperture suborbi- 

 cular, the outer lip rounded ; the pillar-lip reflected, forming behind a small 

 cavity. 



245. C. interrupta. — Whorls five or six, slightly rounded, 

 with interrupted spiral brown bands. 



Turbo in. Adams, Linn. Trans, v. 3. t. i. f. 16, 17- Mont. Test. Brit. 

 329. — On fuci, common. 

 Length about ph of an inch ; breadth |ds less ; pellucid, glossy, pale 

 brown'; the coloured bands frequently form rows of oblong spots ; aperture 

 wide ; outer lip rounded, very thin ; pillar-lip scarcely reflected. 



246. C. rubra. — Whorls five, rounded, translucent, glossy, 

 brown, with a fine separating line. 



Turbo ruber, Adams, Linn. Trans, iii. 66. t. xiii. f. 21. Mont. Test. Brit. 

 320 — At the roots of fuci, not uncommon. 

 Length |th of an inch ; breadth §ds less; the pillar distinctly visible from 

 the outside ; aperture suborbicular ; pillar-lip slightly reflected. 



247. C. vitrea. — Whorls four, rounded, nearly transparent, 

 white. 



