106 lIELICIDiE. 



It was not re-tliscovereil f<n- many years, until noticed 

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

 among the debris of Salisbury (Jrags, 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. PYGM^A, Draparnaud. 



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

 rounded ; mouth with four or five teeth. 



Plate CXXX. tig. 4, 5, 6. 



Pupa 2^yymcBa, 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. Anini. 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 sexdentatus,junr., Mont. Test. Brit. p. 337. 



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

 Pupa quinquedenlata, and pyiimda, Hartm. Neue Alpina, vol. i. p. 219. 

 Helix lathmia cylitidrica. Gray, Medical Repository, 1821, p. 239 (no descrip- 

 tion). 

 Vertigo 2^!!gm(Ea, Ferus. Prodrom. Moll. p. 64. — Turt. Manual L. and F. W. 

 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, lUust. Conch. G. B. p. 41, pi. 18, f. 37. 

 — Michauu, Conip. Drap. Moll. France, p. 71. — C. Ffeif. 

 Deutsch. Land und Siissw. 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 Sussw. Moll. pt. 10, 

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

 Alaa vulgaris, Jeffreys, Trans. Linn. Soc. vol. xvi, p. 359, 

 Vertigo alpesiris. 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. 

 AlcEa pygmoea, Beck, Index i\Ioll. Mus. Christ. Frid. p. 85. 

 Stoviodonta pygmma^ Mermet, Moll. Pyren. p. 55. 



Shell very minute, cylindraceous-subovate, subperfo- 



