HELIX. 901 



CEPA. 32. Shell imperforate, sub-globular, and 

 slightly keeled ; aperture transverse, with 

 one tooth on each lip, and a corresponding 

 depression behind. 



Helix Cepa. Midler Verm. ii. p. 74. Gmeliti, p. 3619- 



Lister Conch, t. 88. f. 89- 

 Inhabits Jamaica. Lister. 

 Shell about fifteen Ihies in diameter, of a pale reddish colour, 



with a white band, and convex on both sides ; it has five 



contiguous whirls. Muller says it is nearly allied to H. 



siniiata, but the diiference in their teeth will serve readily 



to distinguish them. 



LAMPAS. 33. Shell imperforate, keeled, flattish 

 above, and gibbous below ; whirls scarred, 

 and the outer lip orange-coloured. 



Helix Lampas. Muller Verm. ii. p. 12. Gmelin, p. 3()19« 

 Helix Carocolla. Chemnitz, ix. p. 267. t. £08. f. 2044 

 and 2045. 



Inhabits 



Shell about two inches and three-quarters in diameter, of a 

 yellowish brown colour, and has the upper surface flatter 

 and the lower more convex than H. Carocolla, to which it 

 is most nearly allied ; the whirls are finely siriated, and have 

 a scarred appearance ; the throat is yellowish, and the outer 

 lip orange-coloured. 



CAROCOLLA. 34. Shell imperforate, keeled, and 

 convex on both sides ; outer lip w hite. 



Helix Carocolla. Linnaus Syst. Nat. p. 1243. Muller 

 Verm. ii. p. 77. Born Mus. p. 370. Schroeter Einl. ii. 

 p. 132. Chemnitz, ix. part 2. p. 15. t. 125. f. 1090 to 

 1092. Gmelin, p. 3G 19- Shaw Nat. Misc. x. t. 374. 

 larger figures. 

 Helix tornata. Born Mus. p. 360. t. 14. f . 9 and 10, 

 Lister Conch, t. 63. f. 6l, and t. 1055. i. 5. Gualterj 

 t. 3. f. I. Jrgenville, t. 8. f. D. Seha, iii. t. 40. f. l6, 

 17, 22, and 23. Knorr, iv. t. 5. f. 2 and 3. Favanne. 

 t. 65. f.Fl2. 

 Inhabits America, and is a land shell. UAvila. 

 Shell about an inch long, and an inch and three-quarters or 

 two inches broad, of a dark blackish olive or chestnut-brown 

 colour, with a paler obsolete band by the keel ; it has six 



VOL. II. Y 



