30 HELICID^. 



thick, reflected upon the shell, furnished with a lobe on 

 the right side under the spire ; tail obliquely truncated ; 

 edge teeth of tongue aculeate. 



V. PELLUciDA, Miiller. 



Plate CXXXI. fig. 8, 9, 10, and (Animal) Plate I. I. I. fig. 2. 



Helix pellucida, Muller, Verm. vol. ii. p. 15. — Penn. Brit. Zool. ed. 4, vol. iv. 

 p. 138? — Shepard, Trans. Linn. Soc. vol. xiv. p. 169, 

 animal. 

 Vitri7ia „ Drapar. Tabl. Moll. p. 98 ; Hist. Moll. Terr, et Fluv. France, 

 p. 119, pi. 8, f. 34 to 37. — Fleming, Brit. Anim. p. 267.— 

 TuRTON, Manual L. and F. W. Shells, p. 31 (cd. Gray, 

 p. 120), f. 21.— Alder, Mag. Z. and B. vol. ii. p. 105. — 

 Macgil. Moll. Aberd. p. 94.— Brown, Illust. Conch. G. B. 

 p. 54, pi. 17. f. 6, 7, 12. — Brard, Coq. Envir. Paris, p. 78, 

 pi. 3, f. 3 to 6. — Lam. Anim. s. Vert. (ed. Desh.) vol. vii. p. 

 728.— GuERiN, Iconog. R. A. Moll. pi. 5, f. 3.— Desh. Enc. 

 Meth. Vers, vol. iii. p. 1133. 

 Helix diaphana, Poiret (not Drap. Tabl.), Coq. Fl. et Terr. Aisne, p. 77. 

 Helieolimax major, Ferus. Essai, p. 43. 



Helix ellijjiica. Brown, Mem. Werner. Soc. vol. ii. pt. 2, p. 525, pi. 24, f. 8 

 (read in 1815). 

 „ Draparnaldi, Cuvier, Regne Anim. vol. ii. p. 405. 

 Vitrina major, C. Pfeif. Land und SUssw. Moll. pt. 1, p. 47, note. 

 Limacina pellucida, var. /3, Hartm. Neue Alpina, vol. i. p. 246. 

 Helieolimax Audehardi, Ferus. Tabl. Syst. Moll. p. 21 ; Hist. Moll. pi. 9, f. 5. 



„ pellticida, Blainv. Diet. So. Nat. vol. xxxii. p. 255. 



Vitrina Audehardi, C. Pfeif. Land und Siisswas. Moll. pt. 3, p. 55. 



„ Draparnaldi, Jeffreys, Trans. Linn. Soc. vol. xvi. p. 32G. — L. Pfeif. 



Monog. Helic. vol. ii. p. 493. 

 „ Mulleri, Jeffreys, Trans. Linn. Soc. vol. xvi. p. 326. 

 „ Dilhvynii, Jeffreys, Trans. Linn. Soc. vol. xvi. p. 506 (changed from 

 elonf/aia, p. 327). 



Shell small, transversely elliptic, oblique, extremely thin 

 and transparent, very highly polished, ranging in colour 

 from oil-yellow to pea-green (in the latter case less di- 

 aphanous, and lined internally with subnacreous white), 

 quite smooth, except near the distinctly impressed suture 

 which is margined by a threadlike indentation, and cre- 

 nated, though at times obscurely so. Shape of the disks, 



