36 COLIMACEA. 



f. 1, 1; Elisma fasciata, Loach, Moll., p. 109; Bulinms acu- 

 tus, Brown, Illust. Concli., p. 37, pi. 14, f. 18; lb., First Ed., 

 pi. 41,f. 18. 



Shell oblong, taper, thin, subpellucid, of a yellowish or 

 grayish-white, longitudinally streaked, or spirally banded with 

 chestnut or umber-brown ; body somewhat more than a third 

 of the length of the shell ; spire consisting of nine or ten some- 

 what rounded volutions, not very deeply separated by the 

 suture, and terminating in a rather acute apex ; whole shell 

 coarsely wrinkled longitudinally ; aperture subovate ; outer lip 

 thin ; inner lip a little reflected on the columella, with a small 

 subumbilicus behind. Length nearly three-quarters of an inch; 

 diameter a quarter. 



This species is liable to considerable variety in its markings ; 

 sometimes it is longitudinally streaked, at others having a single 

 band of interrupted spots at the base of the volutions, in some 

 instances it has two bands, which, at the base often become 

 confluent, and not unfrequently it is nearly white. It is also 

 liable to some variations in shape and size. 



Found on many of the sand and bent pastures of Great 

 Britain and Ireland, near the sea shore, as well as in inland 

 localities ; Thompson, also, gives as a habitat the crevices of 

 the walls of the old church of Howth, at a considerable height 

 from the ground, and although local in its habitat, generally 

 very abundant where it is found. He says, it is found from 

 north to south of Ireland — from the neighbourhood of the 

 Giant's Causeway to Youghal; and at Ballyshannon, County of 

 Donegal. 



Genus XVL— BAL^A.— Gray. 



Shell thin, with the convolutions reversed, covered with a 

 slender brown epidermis ; body short ; spire long and taper, with 

 many volutions, gradually decreasing in size as they ascend ; 

 aperture small, subquadrate; outer lip entire, a little thickened, 

 with a slight fold on the columefla ; base entire. 



L Balnea fragilis, pi. IV, f. 30. 



Balcea fragilis, Leach, Moll., p. 116; Turton, Man., p. 87, 

 f. 70 ; Alder, Mag. Zool. and Bot., II, p. 11 1 ; Balm fragilis. 

 Gray, Zool. Journ,, I, p. Gl ; Forbes, Mai. Mon., p. 1 1 ; Balca 



