106 LIMXJE1DJE. 



Genus LIMNJEA. 



Limncea, Lamarck, 1799, Me"m. Soc. Hist. Nat., Paris, p. 75, as 

 Lymncfa, emend. Rang, 1829, Man. de 1'Hist. Nat., Moll. p. 176; 

 Sowerby in Reeve,. Con. Icon, xviii, etc. 



Helix, Linn., Gmelin, Burrow. 



Bucinum, Miiller. 



Bulimus, Poiret, Brugrriere. 



Ltmnaus, Draparnaud, Born. 



Limncea, Lamarck, Nilsson. 



Stagnicola, Leach. 



Linmceus, auct. reliq. 



TYPE, L. staynalis (Linnaeus) ; Europe generally. 



Range. World-wide. 



Shell dextrally spiral, horny-testaceous, ovate or pyramidal, 

 covered with a thin epidermis ; spire acuminated, whorls generally 

 turreted, inner lip of the aperture narrowly spread on the body- 

 whorl, generally with a single plait. No operculum. 



Animal rather long and twisted in a spiral coil ; head prominent ; 

 tentacles short, triangular and flattened ; foot oblong, bilobed or 

 notched in front and obtusely rounded behind. 



Section LIMN^A (sensu stricto). 

 Eor characters, type and range, see above. 



210. Limnaea (Limnaea) stagnalis (Linnceus}. 



Limnceus, Linn., 1758, Syst. Nat. 10th ed. p. 774, as Helix stagnalis 



&nd. frag His. 

 Limncea (Limncea) stagnalis, Lamarck, 1801, as Lymncea stagnalis, 



Syst. Anim. sans Vert. p. 91 ; Sowerby in Reeve's Conch. Icon. 



xviii, pi. 1, no. 4 ; H. & T., C. I. 1876, p. xvi. 

 Lymncea stagnalis, in Reeve, L. & F. W. Moll. British Isles, p. 160. 



" Shell : ovately turreted, eompressly urnbilicated, rather thin, 

 yellowish horny, spire produced and sharply acuminated; whorls 

 five to six, slopingly convex round the upper part, then ventricose, 

 striated in the direction of the lines of growth, sometimes evanes- 

 cently obscurely irregularly ridged and malleated in the opposite 

 direction ; aperture moderate, somewhat squarely ovate, columella 

 callously twisted, lip broadly appressly dilated over the umbilicus." 

 (Reeve.) 



Alt. 47*5, diam. 22*5 mm. (spec.). 



Hob. Europe ; Afghanistan ; Kashmir. 



211. Limnaea (Limnaea) acuminata, Lamarck. 



Limncea (Limncea) acuminata, Lamarck, Anim. s. Vert, vi, pt. 2, 

 p. ICO ; Deles. Rec. Coq. Lam. pi. 30, fig. 6 ; H. & T., C. I. pi. 69, 

 tigs. 8, 9 ; Sowerby, in Reeve's Conch. Icon, xviii, pi. 10, no. 66. 



Original description : Testa ovato-ventricosa, tenuissima, 

 hyalina, subalbida ; spira brevissima, apice acuminata. 

 Alt. 25 mm. 

 Jdab. Bengal ; 130 miles S.E. of Hiugola, etc. 



