952 HELIX*. 



young or imperfect shell of some other species. Unless 

 Argenville's is a magnified figure, the shell which he found 

 in the river of the Gobelins is much larger. 



suB-cYLiNDRiCA. 147. Shell turreted, imperforate, 

 sub-cylindrical, obtuse, glossy, with five 

 slightly convex whirls, and the aperture oval. 



Helix sub-cylindrica. Linnceus Sj/st. Nat. p. 1248.? Chem- 

 nitz, ix. part 2. p. 16?. t. 135. f. 1235. Gmelin, p. 

 3652. 

 Helix lubrica. Muller Verm. ii. p. 104. Gmelin, p. 3661. 

 Montagu Test. p. 390. t. 22. f. 6. Maton and Racket, 

 in Lin. Trans, viii. p. 213. Dorset Cat. p. 55. t. 21. 

 f. 18. 

 Helix Stagnoruni. Pulteney Dorset Cat. p. 49- 

 Turbo Muscorum. Pennant Zool. iv. p. 131. t. 82. f. 118. 

 Turbo glaber. Da Costa Brit. Conch, p. 87. t. 5. f. 18. 

 Bulimus lubricus. Bruguiere Enc. Meth. p. 311. 

 La Brillante. "Geoffroy, p. bS, No. 17- t. 2. 

 Lister Jnim. Ang. t. 2. f. 7. Petiver Gaz. t. 30. f. 7. 

 Schroeter Erdconch. t. 1. f. 9- Martini Berlin. Mag. 

 iii. t. 5. f. 59. 

 Inhabits ditch-banks and wet moss, in most parts of Europe. 

 England. Lister, &;c. France. Geoffroy. Saxony. Schroe- 

 ter. Denmark. Muller. 

 Shell a quarter of an inch long, and one third as broad, smooth, 

 glossy, pellucid, and of a hom-colour, when alive, but dead 

 shells become white and opake ; it has five or six whirls, 

 which are very little convex, but well defined by the suture. 

 Linnaeus has described his H. sub-cylindrica with four 

 whirls, and to be an inhabitant of fresh water, in the north 

 of Europe ; Bruguiere, however, asserts that about Paris it 

 is found only on the banks of the Seine, and Muller contra- 

 dicts Geoffroy 's assertion that the animal is killed by immer- 

 sion in water, so that Linnaeus may probably in this respect 

 have been misled, and young shells have only four whirls, 

 which agrees with his description. 



sTAGNORUM. 148. Shell sub-turreted, somewhat 

 perforated, with five whirls and the aperture 

 ovate. 



Helix Stagnoruni. Gmelin, p. 3653. 



Helix stagnalis. Linnaus Syst. Nat. p. 1248. 



Turbo stagnalis. Baster Opusc. p. 77. t. 7. f. 4. 



