COLIMACEA. 59 



H. hortensis, locating on a small spot on the banks of the canal 

 between Keighley and Bingley, Yorkshire. 



6. Helix Arbustorum, pi. V, f. 25, 26, 27, 28. 

 Helix Arbustorum, Linnaeus, Syst. Nat., p. 1245; Gmehn, 

 Linn. Syst., p. 3G30, No. 53 ; Muller, Verm., p. 55, No. 248 ; 

 Lister, Conch., pi. 56, f. 53 ; Donovan, Brit. Sh., IV, pi. 136 ; 

 Montagu, Test. Brit., p. 413; Drapernaud, p. 38, pi. 5, f. 18; 

 Lamarck, An. San. Vert., VI, pt. 2nd, p. 180; Brard, p. 65, pi. 

 2, f. 12 ; PfeifFer, I, p. 24, pi. 2, f. 7, 8 ; Rossmassler, I, p. 57, 

 pi. 1, f. 4; Fleming, Edin. Ency., VII, p. 81; lb., Brit. An., p. 

 264; Brown, Ency. Brit., 6th Ed., VI, p. 458; lb., Wernerian 

 Mem., II, p. 525; Turton, Brit. Fau., p. 190; lb., Man., p. 35; 

 Alder, Mag. Zool. and Bot., II, p. 106 ; Forbes, Mai. Mon., p. 

 7 ; Thompson, Ann. and Mag. Nat. Hist., VI, p. 23 ; Cochlea 

 unifasciata, Da Costa, p. 75, pi. 17, f. 6; Arianta Arbusto- 

 rum, Leach, Moll., p. 86 ; Helix Arbustorum, Brown, Illust. 

 Conch., p. 44, pi. 16, f. 20, 21, 22; lb.. First Ed., pi. 39, f. 20, 

 21, 22. 



Shell subglobose, subpellucid ; body large, ventricose ; spire 

 rather small, consisting of four inflated volutions, deeply defined 

 by the line of the suture, and terminating in a rather acute 

 apex ; aperture sublunate, somewhat longer than wide ; outer 

 lip broad, white, and reflexed, with an internal rib; pillar lip 

 broad at its junction with the body, and narrowing suddenly as 

 it descends; surface of a cinerious colour, and in some instances 

 of a pale yellowish hue ; beautifully mottled and streaked with 

 lines of dark chocolate-brown, with a single transverse band of 

 brown, investing the body volution, which continues spirally at 

 the base of the volutions of the spire, but gradually becomes 

 imperceptible before reaching the apex. 



Fig. 28 represents the young shell. 



In some specimens the girdle is wanting, and the shell of a 

 much paler colour, as in fig. 27. Sometimes the blotches and 

 markings are of a beautiful intense chocolate-colour. I have 

 seen specimens entirely divested of blotches or band. It is also 

 liable to some variety in the elevation of the spire. 



This is rather a local species, but is to be met with, in Britain 

 and Ireland, from one extreme of the islands to the other. 



