HELIX. 965 



half so large, anH the whirls are more rounded, and the su- 

 ture more conspicuous. The Buccinum glahrum of Mulier 

 is probably at most only a variety of this species, and differs 

 principally in having a reticulated band on the body-whirl. 



ALBICANS. 172. Shell sub-ovate, opake, elongated, 

 acuminated, white, and the aperture oval. 



Helix albicans. Gmelin, p. 3666. 



Helix, No. 249. Schroeter Einl. ii. p. 247. 



Buccinum mucrone valde elongato, colore albo. Schroeter 

 Fluss. p. 31 1, t. 7. f.6. 

 Inhabits fresh water about Hamburgh. Schroeter. 

 Shell half an inch long, and about one-third as broad, widi five 



whirls, and appears from Schroeter's figure to have a more 



elongated spire, and the body-whirl less distended, than any 



of its congeners. 



PUTRis. 173. Shell imperforate, ovate-oblong, ra- 

 ther obtuse, yellowish, with four whirls, and. 

 the aperture ovate. 



Helix putris. LintKEus Syat. Nat. p. 1249- Pennant 



Zooliv. p. 139, t. 86. f. 137. Maton and Racket, in 



Lin. Tram. viii. p. 219. Dorset Cat. p. 5Q. t. 21. f. 13. 



Helix peregra. Montagu Test. p. 373. t. l6. f. 3. 



Helix auricularia. Schroeter Fluss. p. 272. t. 6. t. 3 to 6, 



and t. 1 1 C. f. 2. 

 Bonanni Rec. S. f. 54. Lister Anim. Ang. t. 2. f. 24, and 

 Conch. 1. 123. f.23. Klein Ost. t. 3. f.70. Favatme, 

 t. 61. f.E 4. 

 Variety. With a white somewhat expanded lip. 

 Lin. Trans, viii. t. 5. f. 8. Dorset Cat. 1. 19. f. 30. Mo7t- 

 tagu Supp. p. 139. 

 Inhabits stagnant water in Europe. Linnceus. England. Lis- 

 ter, S^c. 

 Shell sometimes an inch long, and five-eighths broad, but is 

 usually smaller ; it is thin, rather pellucid, of a yellowish 

 horn-colour, covered with a blackish epidermis, and has four 

 longitudinally wrinkled whirls, of which the body-whirl is 

 very large, and the spire very small. 



PEREGRA. 174. Shell sub-conical, horny, with the 

 summit acuminated, and the aperture ovate. 



Helix peregra. Gmelin, p. 3659. 

 VOL. II. 2 c 



