64 COLIMACEA. 



Ed. ; Ferussac, Journ. de Phys., XC, p. 300 ; Hdu- Zenohia 

 bimarginata, Gray, Med. Rep., 1821; Heliv rufilahris, JefFreys, 

 Linn. Tr., XVI, p. 509 > Teba Carthusianella, Leach, Moll., p. 

 95, pi. 8, f. 4, 5, 6 ; Helix Carthusiana, Brown, Illust. Conch., 

 p. 46, pi. 17, f. 49, 50, 51 ; lb., First Ed., pi. 40, f. 49, 50, 51. 



Shell subdepressed, subpellucid, glabrous, of a grayish-brown ; 

 body large, inflated on the sides ; spire very small, but little 

 elevated, consisting of three slightly defined volutions, termi- 

 natintr in a subacute apex ; aperture sublunate ; outer lip thin 

 on the margin, with a milk-white, transverse, rather broad band 

 on the outside ; base provided with a very small umbilicus, 

 which is partly covered by the columellar lip. 



The H. Carthusiana is subject to some variety, in size, thick- 

 ness, and also in the consistence of the shell. One variety is 

 smaller, and more convex. 



This species inhabits the chalk districts of Sussex and Kent, 

 among short grass ; and is also connnon on the coast betwixt 

 Dover and Brighton. 



12. Helix rufescens, pi. VII, f. 14, 15. 



Helix rufescens, Pennant, Brit. Zool., IV, p. 134, pi. 85, f. 

 127 ; Montagu, Test. Brit., p. 420, pi. 23, f. 2 ; Turton, Brit. 

 Fau., p. 189; lb., Man., p. 37, f. 28; Fleming, Edin. Ency., 

 VII, p. 79; lb., Brit. An., p. 261 ; Brown, Ency. Brit., 6th Ed., 

 VI, p. 457 ; lb., Wernerian Mem., 11, p. 525 ; Thompson, Ann. 

 and Mag. Nat. Hist., VI, p. 28; Jeffreys, Linn. Tr., XIII, p. 

 337; Ferussac, Prod., p. 44; Donovan, Brit. Sh., V, pi. 157, f. 

 1 ; Maton and Rackett, Linn. Tr., VIII, p. 196; Heli.v hispida, 

 Donovan, V, pi. 151, f. 1; Heli.v glabella, Drapernaud, p. 102, 

 pi. 7, f. 6 ; Pfeiffer, p. 34, pi. 2, f. 16 ; Alder, Mag. Zool. and 

 Bot., II, p. 107 ; Teba rufescens, Leach, Moll., p. 96 ; Cochlea 

 rifescens, Da Costa, p. 80, pi. 4, f. 6 ; Helix rifescens. Brown, 

 Illust. Conch., p. 46, pi. 17, f. 47 and 53; lb.. First Ed., pi. 40, 

 f. 47 and 53. 



Shell subdepressed, subopaque, rufous brown ; body large ; 

 spire small, consisting of five slightly elevated and moderately 

 inflated volutions, well defined by the sutural fine ; centre of 

 the body volution encompassed by a slight subcarinated girdle, 

 of a paler colour than the rest of the shell, but which does not 

 extend to the volutions of the spire; aperture semilunar, some- 



