Genus LIMNEA, Lamarck, 



Plate 1. — Fig. 1. 



"Testa oblonga, interdiim turrita; spira exserta. Aper- 

 tura integi'a, longitudinalis. Labrum acutum, inferne ad 

 sinistx'um revertens et ascendens, in columellam versus 

 aperturam decurrit, plicamque obliquam mentitur. Oper- 

 culum nullum." — Lamarck. 



SYNONYMS AND REFERENCES. 



Helix, Linnaeus. Buccinum, Muller. 



BuLiMUs, Bruguieres. 



Lymnma^ Lamarck. An. sans vert., vol. viii. p. 405. 



Lymn^us, Limn^us, Drap., Turton, Say, &c. 



LiMNEA, Fleming, G. B. Sowerby, Jr., etc. 



Stagnicola, Leach. Mollusc, p. 141 — 145. (Gray.) 



CuviER. Mem. pour servir. a I'Hist. et a I'Anat. des 



MoUusques. — Le Regne Animal, Mollusques, p. 71. 

 Sowerby. Genera of Shells. 

 Penny Cyclopedia, vol. xiii. p. 500. 



DESCRIPTION. 



Animal spiral; elongated or subglobular: 

 head depressed on each side; bearing two flat- 

 tened, triangular, elongated tentacles; with the 

 eyes at their anterior internal base: mouth 

 J 1 



