pupa. 109 



The animal closely resembles that of the last species. 



Probably a not uncommon shell, but often overlooked. 

 It was originally noticed in the southern English counties 

 by Mr. Jeffreys who found it near Barnstaple. It occurs 

 in the Northumberland, Westmoreland and Yorkshire dis- 

 tricts, but rarely, and among wet moss. In Ayrshire, in 

 Scotland, and widely distributed in Ireland, though rare 

 (W. Thompson). 



P. a nti vertigo, Draparnaud. 



Dextral, minute, smooth ; mouth with from seven to nine teeth 

 and denticles. 



Plate CXXX. fig. 7. 



Pupa antivertigo, Drap. Tableau Moll. p. 57 ; Hist. Nat. Moll. Terr, et Fluv. 

 France, p. 60, pi. 3, f. 32, 33.— Lam. Anim. s. Vert. (ed. 

 Desh.) vol. viii. p. 692. — L. Pfeif. Monog. Helic. vol. ii- 

 p. 361. 

 „ vertigo var. a. and y, Hartm. Neue Alpina, vol. i. p. 219. 

 „ octodentata, Hartm. do. 

 Vertigo septemdentala, Ferus. Prodr om. Moll. p. 64. — Charpent. N. Denks. 

 Schweiz. Ges. Nat. vol. i. p. 1 8. — Rossmassl. Ieonog. 

 Land und Sussw. Moll. pt. x. p. 28, f. 647. 

 „ octodentata.) Studer, Verz. Schweiz. Conch. 

 ,, sexdentata, C. Pfeif. Deutsch. Land und Sussw. Moll. pt. 1, p. 71, pi. 3, 



f. 43, 44 Wagner, in Chenm. Conch, vol. xii. p. 175, 



pi. 235, f. 4124. 

 „ aittivertigo, Michaud, Compl. Drap. Moll. France, p. 72. — Graells, 



Cat. Moll. Esp. p. 7. 

 „ palustris, Turt. Manual L. and F. W. Sheik, p. 104, f. 85. — Gray, 

 Manual L. and F. W. Shells, p. 204, pi. 7, f. 85.— 

 Thompson, Ann. Nat. Hist. vol. vi. p. 114. — Brown, Illust. 

 Conch. G. B. p. 41, pi. 18, f. 39. 

 Alaa palustris, Jeffreys, Trans. Linn. Soc. vol. xvi. p. 360, 516. 



„ antivertigo, Beck, Index Moll. Mus. Christ. Frid. p. 85. 

 Stomodonta „ Mermet, Moll. Pyren. p. 54. 



Shell minute, ovate-oblong, much shining, dark chestnut 

 brown, or tawny chestnut coloured, smooth, tolerably 

 strong for its size, subumbilicated, well defined. Whorls 



