10G HELICID-ffi. 



It was not re-discovered for many years, until noticed 

 by Mr. Jeffreys on Durdham downs, near Bristol, and 

 among the debris of Salisbury Crags, at Edinburgh, where 

 it is not rare, by one of the authors of this work. A 

 specimen was communicated as collected in Skye, by our 

 lamented and talented friend, the late Mr. Macaskill. It 

 is strangely local and confined in its distribution. 



P. pygmjKA, Draparnaud. 



Dextral, very minute, smooth, or nearly so ; whorls five, 

 rounded ; mouth with four or five teeth. 



Plate CXXX. fig. 4, 5, 6. 



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

 p. 60, pi. 3, f. 30, 31. — Fleming, Brit. Animals, p. 268. — 

 Lam. Anirn. s. Vert. (ed. Desh.) vol. viii. p. 190. — Dupuy, 

 Moll, du Gers, p. 41. — Philippi, Moll. Sicil. vol. ii. p. 221. — 

 L. Pfief, Monog. Helic. vol. ii. p. 362 

 Turbo seocdentatus,junr., Mont. Test. Brit. p. 337. 



Vertigo quinquedentala, and quadridentata, Studer, Verz. Schweiz. Conch. 

 Pupa quinquedcntata, and pygm<za, Hartm. Neue Alpina, vol. i. p. 219. 

 Helix Isthmia cylindrica, Gray, Medical Repository, 1821, p. 239 (no descrip- 

 tion). 

 Vertigo pygmxa, Fkrus. Prodrom. Moll. p. 64. — Turt. Manual L. and F. \\". 

 Shells, p. 103, f. 83.— Gray, Manual L. and F. W. Shells, 

 p. 201, pi. 7, f. 83. — Thompson, Ann. Nat. Hist. vol. vi. 

 p. 114.— Brown, Illust. Conch. G. B. p. 41, pi. 18, f. 37. 

 — Michaud, Comp. Drap. Moll. France, p. 71. — C. Ffeif. 

 Deutsch. Land und S'ussw. Moll. pt. i. p. 72, pi. 3, f. 47, 48. 

 — Wagner, in Chemn. Conch, vol. xii. p. 176, pi. 235, 

 f. 4125. — Charpent. N. Denks. Schweiz. Ges. Nat. vol. i. 

 p. 18. — Rossmassl. Iconog. Land und S'ussw. Moll. pt. 10, 

 p. 29, f. 648.— Graells, Cat. Moll. Esp. p. 7. 

 Ahca vulgaris, Jeffrey's, Trans. Linn. Soc. vol. xvi. p. 359. 

 Vertigo alpestris, Alder, Mag. Zool. and Bot. vol. ii. p. 112 (locality only); 

 Trans. Nat. H. Soc. Northumb. vol. ii. p. 340. — Gray', 

 Manual L. and F. W. Shells, p. 202, pi. 12, f. 141. 

 Alceapyymma, Beck, Index Moll. Mus. Christ. Frid. p. 85. 

 Stomodonta py<imcea, Mermet, Moll. Pyren. p. 55. 



Shell very minute, cylindraceous-subovate, subperfo- 



