GASTEROPODA. LIMNADZ. 103 
Montagu; in Suffolk, by the Rev. J. Leiths; and near Wrab- 
ness, in Essex, by the Rev. R. Sheppard ; both of whom have 
furnished me with specimens. 
Animal blackish ; tentacula sometimes pale. 
Umbilicus generally closed by the peritreme in adult speci- 
mens. 
2. STAGNICOLA COMMUNIS. 
S. testa anfractibus septem ; superioribus transversim undoso- 
striolatis; ultimo transversim et longitudinaliter elevato- 
striato, hine subangulato. 
Buccinum palustre, Mill. Verm. Hist. 13. 
Helix palustris, Gmel. Syst. Nat. i. 3658; Mont. Test. Brit. 
370. t. 16. fig. 10; M. & R. Trans. Linn. Soc. vii. 216. 
t. 5. fig. 8; Dill. Desc. Cat. 963; Turt. Conch. Dict. 66. 
Helix stagnalis, 8. Penn. Brit. Zool. iv. 139. t. 86. fig. 136. B. 
Helix corvus, Gmel. Syst. Nat. 3665? 
Bulimus palustris, Brug. Encycl. Méth. Vers, 302. 13. 
Limneus palustris, Drap. Hist. des Moll. 52. pl. 3. figs. 1, 2. 
Limneea palustris, Plem. Edinb. Encycl. vii. 77. 
Limnée des marais, Cuv. Mém. sur les Moll. fig. 4. 
Animal olivaceo-fuscum aut nigrum, luteo aut flavido-opaco- 
punctatum. Tentacula cinereo-nigra, diluta. 
Habitat in paludibus, vulgaris. 
Shell with seven whorls: the upper ones with transverse un- 
dulating strize ; the last whorl with transverse and longitudinal 
elevated strize, giving it an angulated appearance, like cut glass. 
Colour dark-horny, or fuscous. Peritreme whitish, rarely 
tinted with pale reddish. The inside of the aperture, towards 
the right and anterior aspects, has sometimes a red or flesh- 
coloured band. 
Animal olive-brown, or sooty-black, spotted with luteous or 
opake yellowish. Tentacula pale cinereous-black. Height an 
inch. 
Stagnicola communis is generally diffused throughout Great 
Britain. It inhabits marshes, ponds, and ditches. 
