COLIMACEA. 49 



f. 30, 31 ; Forbes, Mai. Mon., p. 12; Turbo sexdentalus, young 

 shell, Montagu, p. 337 ; Altea vulgaris, Jeffreys, Linn. Tr., 

 XVI, p. 359; Helix Isthima, Gray, Med. Rep., 1821, p. 239; 

 Vertigo pygnKea, Brown, Illust. Conch., p. 41, pi. 18, f. 37. 



Shell oviform, somewhat ventricose, of a glossy, semipellucid, 

 dark reddish-brown colour; spire composed of three or four 

 almost smooth, rather ventricose volutions, the apicial one 

 abruptly smaller than that below it ; aperture sublunate, pro- 

 vided with five teeth, two of which are situate on the columella, 

 the upper one largest, one on the base of the body or superior 

 portion of the aperture, and two on the outer lip, which, with 

 the inner lip, is thin and externally margined, and a little 

 reflected, with a minute subumbilicus behind the columellar lip; 

 outer lip with a longitudinal rib externally- 

 Found in almost all parts of Great Britain and Ireland, 

 although not numerous in any one locality ; its favourite resort 

 is under stones in dry situations, as far as our experience has 

 gone; but Mr. Thompson, an accurate observer of nature, says, 

 he has found it both in wet and dry situations, from the sea 

 shore to elevated mountain localities. Mr. Forbes met with 

 it among grass at Douglas, Isle of Man. 



3. Vertigo cylindrica, pi. V, f. 12. 



Vertigo ciiUndrica, Ferussac, Tab. Moll., p. 65 ; Alder, Mag. 

 Zool. and Bot., II, p. 112; Pupa obtusa, Fleming, Brit. An., 

 p. 269 ; Pupa muscorum, var. a, Drapernaud, p. 59, pi. 3, f. 

 36, 37 ; Pupa minutissima, Hartmann, Neue Alpina, p. 220, 

 pi. 2, f. 5 ; PfeifFer, III, p. 38, pi. 7, f. 12, 13 ; Rossmassler, I, 

 p. 84, pi. 2, f. 38 ; Vertigo cylindrica. Brown, Illust. Conch., 

 p. 41, pi. 18, f. 38. 



Shell cylindrical, pellucid, pale yellowish-brown ; spire con- 

 sisting of four convex, acutely and obliquely striated volutions ; 

 aperture ovate, slightly margined externally, and destitute of 

 teeth ; outer lip rather thin, with a narrow and small umbilicus 

 situate behind the columellar lip. Not quite a line in length. 



Found near the Village of Balmenna, Fifeshire, by my 

 friend Mr. Chalmers, surgeon, Kirkcaldy. Its habitat is under 

 stones. 



4. Vertigo sexdentata, pi. V, f. 13. 



Vertigo sexdentata, Turton, Man., p. 103, f. 84; Vertigo 

 4, 5 dentata, Studer, Catal. ; Vertigo substriata, Alder, Cat. 



H 



