COLIMACEA. 77 



II, p. 109; Rossmassler, I, p. 67, pi. 1, f. 17; Forbes, Mai. 

 Mon., p. 8 ; Thompson, Ann. and Mag. Nat. Hist., VI, p. 30 ; 

 Turton, Brit. Fau., p. 188; lb., Man., p. 54, f. 37; Brard, p. 

 45, pi. 2, f. 8; Brown, Illust. Conch., p. 50, pi. 17, f. 21, 23, 

 and 34 ; lb.. First Ed., pi. 40, f. 21, 23, and 34 ; Helix cespi- 

 tum, Drapernaud, p. 109, pi. 6, f. 16; PfeifFer, I, p. 39, pi. 2, f. 

 24, 25 ; Helix erica, Da Costa, Brit. Conch., p. 53, pi. 54, f. 8; 

 Helix albella, Pennant, Brit. Zool., IV, p. 132, pi. 85, f. 122; 

 Zonites ericitorum, Leach, Moll., p. 163. 



Shell depressed, and subpellucid; body very large; spire very 

 short, consisting of five much depressed volutions, but little 

 elevated above the body, which is remarkably inflated; base 

 furnished with a very large and deep umbilicus, which exposes, 

 internally, nearly half of the breadth of the volutions of the 

 spire ; aperture rather longer than wide, sublunated, or nearly 

 circular ; outer lip thin, reflected, nearly uniting all round, ex- 

 cept where it is interrupted by the body on the columella; 

 whole surface covered with longitudinal, shghtly concentric 

 wrinkles ; colour yellowish-white, or grayish-brown ; the supe- 

 rior portion of the body generally furnished with a brown band 

 on its upper part, which is continuous at the base of the volu- 

 tions of the spire, and defining their division ; base of the body 

 well rounded, and usually with one nearly central, concentric, 

 broad, dark brown band, and several narrower paler ones on 

 each side, varying from one to five in number. Diameter 

 three-quarters of an inch, and sometimes more ; height a little 

 more than a quarter. 



This species is subject to considerable variations in its 

 colouration ; sometimes quite white, which was considered by 

 Hartmann as a distinct species, and described under the name 

 of H. ohliterata ; sometimes the bands are continuous, and at 

 others interrupted in a catinated manner. It is also liable to 

 vary in size; in some instances little more than half the dimen- 

 sions of our figures. Mr. Jeffreys, in the Linn?ean Transactions, 

 XIII, p. 339, describes a variety found in lona, one of the 

 Western Islands of Scotland, which has a more produced spire 

 than the ordinary form. 



Helix elegans, Brown, Wernerian Mem., II, p. 528, pi. 24, 

 f. 9; Carocolla elegans, Brown, 1st Ed., pi. 40, f. 28; Helix 



