70 HELICID.E. 



especially near the base, which is a little disposed to 

 expand, rather straight, and occasionally forms an angle 

 with the short colnmellar lip. Base rounded ; umbilicus 

 profound, of a moderate size. 



Var. depilata. Bald, usually more depressed, whorls 

 more rounded, peristome more thickened, columella angu- 

 lation usually more distinct. 



Var. concinna. Thicker, hairs few and very deciduous, 

 the umbilicus more displayed, columellar angulation in 

 general more distinct. 



Diameter about the third of an inch. 



The animal is bluish-white, very pale on the sides of 

 the foot, and on the rather short tail. The neck and 

 summit of head are dark brown ; the tentacles are pale- 

 bluish, smooth, and not over long. 



It is abundant on waste places, by hedges, and under 

 stones in all parts of the British Isles. 



H. REVELATA, Fei'USSaC 



Depressed-globular, very thin, olivaceous, downy ; whorls four, 

 the last large in proportion ; outer lip acute ; a small umbilicus. 



Plate CX IX. fig. 1,2,3, 



Helix (Hclicclla) revelata, F£rus. Prodrom.no. "273. — Gray, Manual L. and 

 V. W. Shells, p. 152, pi. 11, f. 133. — Couch, 

 Cornish Fauna, pt. 2, p. 47. — Brown, 111. Conch. 

 G. 13. p. 48, pi. 17, f. 3, 4, 5. — Michaud, Comp. 

 Drap. Moll. France, p. 27, pi. 15, f. (>', 7, 8. — Lam. 

 Anim. s. Vert. (ed. Dean.) vol. viii. p. 83. — Chemn. 

 (ed. Raster) Conch. Cab. p. 188, pi. 34, f. 5—8.— 

 L. Pfeif. Monog. Ilelic. vol. i. p. G5. 

 „ badiella,, ZiEGL. (teste Anton.) 



Helicella revelata, Beck, Index Moll. Mus. Christ. Frid. p. 7. 



Shell depressed-globular, thin, transparent, somewhat 



