VITRINA. 87 



produced. When first hatched, both the animal 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. YITKINA pellucida. Transparent Glass Bub- 

 ble. Shell green, depressed, hyaline and 

 glossy ; whorls three, aperture somewhat oval, 

 (t. 3. 21.) 



Helix pellucida. Midler, Verm. 16.; Perm, B. Z. iv. 134. (?). 

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

 naldi. Leach, Syn. Moll. 59. Helix fuscescens. Gmelin, 

 3639. Helix diapharia. Poiret, Coq. Aime, 77. Helix 

 nitida jun. Montagu, MS S. Helix limacoides. Alien. 

 Helix glaucina. Sheppard, MSS. Helix elliptica. Brown, 

 Wern. Trans, ii. 523. t. 24. f. 8. (1819). Vitrina pellucida. 

 Drap. } 19. t. 8. f. 3437.; Fleming, Phil. Zool 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. 

 Helicolimax major. Ferussac, Essai, 43. Vitrina major. 

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

 Hartmann, N. Alp. i. 246. Helicolimax Audebardi. Feruss. 

 Tab. S. 21. H. Moll. t. 9. f. 5. Vitrina Mulleri. Jeffreys, 

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

 T. xvi. 326. Helicolimax pellucidus. Ferns. Hist. Moll. t. 

 9. f. 6. Helicolimax 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, II. t. 40. f. 345. Vitrinus pellu- 

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

 Vitrina Dillwynii. Jeffreys, L. T. xvi. 326. Vitrina elon- 

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

 Drap. Vitrina beryllina. Pfeiffer, 47. t. 3. f. L Cobresia 

 helicoides vitrea. Studer. Hyalina pellucida. Studer. 



G 4 



