840 TURBO. 



LABiosus. 56. Shell sub-conical, small, with about 

 seven flattish whirls, and slightly ribbed lon- 

 gitudinally ; aperture expanded, and the 

 outer lip somewhat reflected. 



Turbo labiosus. Maton and Racket, in Lin. Trans, viii. 



p. 164. Dorset Cat. p. 49. t. 18. f. 16. 

 Turbo costatus. Pulteneys Dorset Cat. p. 45. 

 Turbo membranaceus. Adams in Lin. Trans, v. p. 2. t. 



1. f. 14 and 15. 

 Helix labiosa. Montagu Test. p. 400. t. 13. f. 7. 



Inhabits the coasts of Great Britain. Pulieneyj 8fc. 



Shell rather more than a quarter of an inch long, and nearly 

 half as broad, whitish or horn-coioured, sometimes streaked 

 longitudinally with pale brown, and covered when alive with 

 a yellowish epidermis ; the three lower whirls have most 

 commonly about fifteen or eighteen rather obsolete longitu- 

 dinal ribs, and the upper whirls are smooth ; the aperture is 

 rather large, and the outer lip expanded. 



ULV^. 57. Shell conical, small, acuminated, with 

 about six smooth flattish whirls, and the 

 aperture sub-ovate. 



Turbo UIvs. Pennant Zool. iv. p. 132. t. 86. f. 120. Da 

 Costa Brit. Conch, p. 105. Montagu Test. p. 318. 

 Maton and Racket, in Lin. Trans, viii. p. 164. Dor- 

 set Cat. p. 49. t. 18. f. 12. 

 Helix Ulvae. Pnlteney Dorset Cat. p. 49- 

 Frequent on Ulvae and other marine plants, and on mud about 

 high water mark on the coasts of Great Britain. Pennant, <3fc. 

 Shell a quarter, or sometimes three-eighths of an inch long, and 

 one-third as broad, of an uniform dull dark or reddish brown 

 colour ; the inner lip is reflected, beneath which there is a 

 small depression, but no umbilicus ; Mr. Montagu has justly 

 remarked that where this species is found in large quantities 

 scarce any other convoluted shell is seen, except perhaps T. 

 littoreus, and one or two other common species. 



VENTROSUS. 58. Shell conical, minute, with six 

 glossy ventricose whirls, and the aperture 

 sub-ovate. 



Turbo ventrosus. Montagu Test. p. 317. t. 12. f. 13. Ma- 

 ton and Racket, in Lin. Trans, viii. p. 164. Dorset Cat. 

 p. 49. t. 18. f. 12 a. 



