10 LYMN^CEA, 



Limneus fossarms, Turton, Man., p. 124, f. 108; Limneus 

 minutus, Brard, p. 138, pi. 5, f. 8, 9 ; Limneus truncatulus, 

 Jeffreys, Linn. Tr., XVI, p. 377 ; Thompson, Ann. and Mag. 

 Nat. Hist., VI, p. 32 ; Lymncea miyiuta, Lamarck, VI, pt. 2nd, 

 p. 162; Brown, Illust. Conch., p. 28, pi. 15, f. 12, 13; Lymncea 

 fossaria, Fleming, Brit. An., p. 274 ; Helix fossaria, Montagu, 

 Test. Brit., p. 372, pi. 16, f. 9; Brown, Ency. Brit., VI, p. 401 ; 

 lb., Wernerian Mem., II, p. 530; Turho rivulus, Walker, Test. 

 Min. Rar., f. 57. 



Shell oblong-ovatc, pellucid, of a yellowish horn colour; spire 

 consisting of five or six rounded, and deeply defined volutions, 

 terminating in a sharp apex; aperture ovate, nearly half the 

 length of the shell ; outer lip slightly reflected ; inner hp nar- 

 rowly folded on the columella. Length generally half an inch, 

 but frequently less. 



This species is not uncommon in many parts of Britain and 

 Ireland. It frequents muddy drains or ditches, and is often to 

 be found in situations, out of water, existing merely by a little 

 moisture. 



4. Lymn^a elongata, pi. Ill, f. 1, 2, 3, 4. 



Lymneus elongatus, Drapernaud, p. 52, pi. 3, f. 3, 4 ; Turton, 

 Man., p. 122, f. 106; Alder, Mag. Zool. and Bot., II, p. 115; 

 Brown, Illust. Conch., p. 29, pi. 15, f. 1, 2, 3, and 5; Lym- 

 ncea leucostoma, Lamarck, An. San. Vert., VI, pt. 2nd, p. 

 162; LymncBus elongatus, Rossmassler, Icon., I, p. 101, pi. 

 2, f. 58 ; Limnea elongata, Sowerby, Genera, f. 6 ; Limneus 

 glaber, Thompson, Ann. and Mag. Nat. Hist., VI, p. 32 ; 

 Helix octanfracta, Montagu, Test. Brit., p. 396 and 588, 

 pi. 11, f. 8; Brown, Ency. Brit., VI, p. 461 ; Helix octona. 

 Pennant, Brit. Zool., IV, p. 138, pi. 8, f. 139; Helix perigrina, 

 Dillwyn, Des. Cat., p. 954 ; Stagnicola octanfracta, Leach, 

 Moll., p. 141. 



Shell horn-coloured, smooth, pellucid, greatly elongated ; 

 body not half the length of the shell ; spire long, tapering, con- 

 sisting of seven or eight slender, gradually diminishing, some- 

 what cylindrical volutions, terminating in an acute apex, these 

 are very slightly wrinkled longitudinally, and the lower volutions 

 sometimes obscurely striated transversely; aperture oblong, not 

 a third the length of the spire ; outer lip thin ; inner lip white, 

 and slightly reflected on the columella. 



