LYMN.ECEA. 9 



The very fine specimen from which f. 21 and 22 were drawn, 

 I ohtained in a small stream on a flat meadow near Clonoonov 

 Barracks, King's County, Ireland, where they were plentiful of 

 that size. 



2. Lymn^ea palustris, pi. II, f. 1, 2, 3, 4, 5, 6, 7, B, 9, 10. 

 Lymnceus palustris, Lamarck, An. San. Vert., VI, pt. 2nd, 



p. 160; Drapcrnaud, p. 52, pi. 2, f. 40 and 42 ; Pfeiffer, p. 80, 

 pi. 4, f. 20; Turton, Man., p. 123, f. 107; Rossmassler, Icon., 

 I, p. 96, f. 51, 52 ; Brard, p. 13G, pi. 5, f. 6, 7 ; Alder, Mag. 

 Zool. and Bot., II, p. 114 ; Thompson, Ann. and Mag. Nat. 

 Hist., VI, p. 45; Forbes, Mai. Mon., p. 14; Brown, lUust. 

 Conch., p. 28, pi. 15, f. 4, 5, 7, 14, 15, 16, 17, 18, and 23; 

 Lymnceus conitmmis, Jeffreys, Linn. Tr., XVI, p. 276 ; Slag- 

 nicola communis, Leach, Moll., p. 142 ; Limnea palustris, 

 Fleming, Brit. An., p. 274 ; Helix palustris, Montagu, Test. 

 Brit., p. 373, pi. 16, f. 10; Donovan, Brit. Sh., pi. 175; Brown, 

 Wernerian Mem., II, p. 530 ; Helix stagnalis, Pennant, Brit. 

 Zool., IV, p. 86, pi. 13, f. 13. 



Shell oblong-ovate, subpellucid, brownish horn-coloured ; 

 body subcylindrical ; spire consisting of four or five well defined, 

 slightly rounded volutions, terminating in a sharp apex, slightly 

 ■wrinkled langitudinally, and sometimes traversed by distant, 

 slight, irregular transverse ridges, particularly on the body volu- 

 tion, producing a facetted appearance; aperture oval, occupying 

 nearly the half of the shell, inside frequently of a deep choco- 

 late, or purplish-brown; outer lip thin; inner Up a little reflected 

 on the columella, with a small umbilicus behind. Length gene- 

 rally about three-quarters of an inch; breadth three-eights. It 

 sometimes, however, occurs larger. 



This species is subject to great variety, both in proportions 

 and colour. Fig. 3, 4, 5, 6, 7, 8, 9, 10 are varieties; f. 5 is a 

 variety of a deep blackish-brown, and is variety b of Draper- 

 naud, p. 52, pi. 2, f. 42 ; Maton and Racket, Linn. Tr., VIII, 

 pi. 5, f. 8 ; f . 8 is variety c of the same author, pi. 2, f. 42; f. 3, 

 4 is a variety, with the apex decollated, which is not uncom- 

 mon, Mag. Nat. Hist., VII, p. 161, f. 32. 



Found plentifully in ditches, marshes, lakes, and ponds. 



3. LVMNiEA MINUTA, pi. I, f. 26, 27. 



Limneus minutus, Drapcrnaud, p. 53, pi. 3, f. 5, G; Alder, 

 Mag. Zool. and Bot., II, p. 115; Brard, p. 138, pi. 5, f. 8, 9; 



C 



