922 HELIX. 



Helix rosacea. Midler Ferm. ii. p. 76. Gmelin, p. S636. 



Inhabits 



Shell nineteen lines in diameter, ventricose, and flesh-coloured 

 both inside and out; it has five whirls which are finely 

 striated transversely, and is said to be nearly allied to H. 

 Pomatia, but has the umbilicus much larger, so as to ex- 

 pose the first whirl of the spire. 



EXTENSA. 80. Shell sub-umbilicated, nearly globu- 

 lar, with four whirls, of a pale colour with- 

 out spots, and the aperture large. 



Helix extensa. Muller Ferm. ii. p. 60. Gmelin^ p. 3631. 



Inhabits 



Shell sixteen lines in diameter, and is nearly allied to H. Po- 

 matia, from which it is said to differ in having the spire less 

 prominent, the aperture larger, and only four, instead of five 

 whirls. 



ciTRiNA. 81. Shell smooth, convex, with five whirls, 

 and the spire rather depressed ; umbilicus 

 nearly closed by the reflected lip. 



Helix citrina. Limmus Si/st. Nat. p. 1245. Muller Verm. 

 ii. p. 63. Born Mus. p. 377. t. 13. f. 14 and 15, and 

 1. 15. f. 1 to 10. Schroeter Einl. ii. p. 146. Chemnitz, 

 ix. parfB. p. 130. t. 131. f. Il67 to 1175. Gmelin, 

 p. 3628. Shazo Nat. Misc. xvi. t.633. 

 Lister Conch, t.54. f.50, and t. 60. f.57- Gualter, t. 3. . 

 f. D and E. Argenville, t. 28. f. 10. Seba, iii. t. 39. 

 f. 1 to 5. Geve, t. 26. f. 277 to 279, 281, 282, and 

 285. Martini Berl. Mag. ii. t. 4. f. 38. Favanne, t. 63. 

 f. I 1. 

 Inhabits Jamaica ; and is a land shell. LinncEUs. China. 



D'Jvila. 

 Shell about three-quarters of an inch long, and almost twice as 

 broad, convex on both sides, and minutely wrinkled longitu- 

 dinally ; it is a pretty species, and Muller has enumerated 

 the following varieties : A. Sulphur-coloured, with a single 

 white band; B. Sulphur-coloured, with two broad white 

 bands; C. Sulphur-coloured, with two white bands, of 

 which the upper is narrowest ; D. Sulphur-coloured, v;ith a 

 red and white band united ; E. Sulphur-coloured, with a very 

 broad white band divided by a red line ; F. Yellow, with a 

 white and red band united, and the base white ; G. Tawny, 

 with the band and base white y H. Tawny, with a red band 



