VITEINA. 87 



produced. When first hatched, both the annual and 

 shell were perfectly formed, but the eyes were 

 retracted into the body ; they are afterwards pro- 

 truded. 



M. Moquin Tandon divides the French species 

 into those in which the animal cannot withdraw it- 

 self into its shell, as V. elongata, and those that can, 

 as V. pellucida ; the latter cover themselves with a 

 transparent epiphragm when in a state of torpidity. 



24. 1. ViTRiNA pellucida. Transparent Glass Bub- 

 ble. — Shell green, depressed, hyaline and 

 glossy ; whorls three, aperture somewhat oval, 

 (t. 3. f. 21.) 



Helix pellucida. Milller, Verm. 16.; Penn, B. Z. iv. 134. (?).— 

 Helix Drapariaudi. Cuv. R. A. ii. 405. ; Vitrina Drapar- 

 naldi. Leach, Syn. 3folL 59. — Helix fuscescens. Gmelin, 

 3639. — Helix diaphana. Poiret, Coq. Aisne, 77. — Helix 

 nitida jiin. Montagu., MSS. — Helix limacoides. Alien. — 

 Helix jrhmcina. Sheppard, MSS. — Helix elliptica. Broivn, 

 Wern. Tram. ii. 523. t. 24. f. 8. (1819). —Vitrina pellucida. 

 Bra p. ] 19. t. 8. f. 34—37.; Fleming, Phil. Zoul. ii. t. 4. f. 1.; 

 Alder, Trans. Newcastle, Mag. Z. and B. ii. 105.; Forbes 

 and Hanley, B. M. iv. 30. t. 131. f. 8 — 10. t. 1 1 1, f. 2. — 

 Helieoliniax major. Ferussac, Essai, 43. — Vitrina major. 

 Pfeiffer, L. and S. Moll. i. 47. — Limacina pellucida. P. 

 Harlmann, N. Alp. i. 246. — Helicoliniax Audebardi. Feruss. 

 Tab. S.2\. H. Moll. t. 9. f. 5. —Vitrina Mlilleri. .Jeffreys, 

 Linn. Trans, xv. 326. — Vitrina Draparnaudi. Jeffreys, L. 

 T. xvi. 326. — Helicoliniax pellucidus. Ferns. Hist. Moll. t. 

 9. f. 6. — Helicoliniax pellucida. Blainv. D. S. N. xxxii. 

 255. — Vitrina Audebardi. Pfeiffer, L. and S. Moll. iii. 55. 

 — Helix limacoides. Alien, Syst. 85. t. 11. f. 20. — Vitrina 

 membranacea. Brown, Fl. t. 40. f. 345. — Vitrinus pellu- 

 cidus. Montf. ii. 239. — Vitrina diaphana; Vitrina depressa; 

 Vitrina Dillvvynii. Jeffreys, L. T. xvi. 326. — Vitrina elon- 

 gata. Jeffreys, L. T xvi. 326. ; Tnrton, Man. ed. 1., not 

 Drap. — Vitrina beryllina. Pfeiffer, 47. t. 3. f. 1.— Cobresia 

 helicoides vitrea. Studer. — Hyalina pellucida, Studer. 

 G 4 



