206 
when we shall have received more specimens and are 
able to observe the animal. 
92. 3. Limn^us stagnalis. Lake Mud Shell. — 
Shell oval, subulate, pointed, brittle ; spire 
acute ; whorls five ; lower volution much in- 
fiated, and somewhat angular ; the suture deep, 
(t. 9. f. 104.) 
Limneus stagnalis. Drap, p. 51. t. 2. f. 38, 39.; Alder ^ Cat, 
114.; Turton^ Man. ed. 1. 121. f. 104. — Lymneus stagna- 
lis. Brard^ p. 133. t. 5. f. 1. — Lymneus stagnalis. Be 
Montfort^ ii. p. 268. Limnea stagnalis. Flem. B. A. 273. ; 
Sowerhy., Gen. f. 1. — Lymnaea stagnalis. Lamarck, Syst. 
91., Hist. vi. ii. p. 159.; Fleming, E. Ency. vii. 77. — Stag- 
nicola vulgaris. Leach, Syn. Moll. 105. ; Ilartm. Gaster, 
t. 8. 12. — -Helix stagnalis. Linn. S. N. i. 1249.; Mont, 
p. 367. t. 16. f. 8.— ? Buccinum stagnale. Muller, Verm, 
327. — Bulirnus stagnalis. Brug. E. M. 303. — Lymneus 
major. Jeffreys, Linn. Trans, xvi. 375. — Limnaeus stagna- 
lis. Rossm. Icon. i. 95. t. 2. f. 49.; Forbes and Hanley, 
B. M. iv. 274. t. 124. f. 4, 5. — Lymneus lacustris, Studer. — 
L. bicolor. Muhlf. — L. appressa. Jay, — Turbo stagnalis. 
Da Costa, B. C. 93. t. 5. f. 11. 
Var. 1., thinner, whorls rather more oblique and less ventri- 
cose (t. 9. f. 105.) : Stagnicola elegans. Leach, Syn. Moll. 
104. ; Schroet. Fluss. Conch, t. 7. f. 6. ? — Helix fragilis. 
Linn. S. N. 1249. ?; Mont. T. B. 369. t. 16. f. 7. — Lymnaea 
fragilis. Flem. E. Ency. vii. 77. — Limneus fragilis. Turton, 
Man. ed. 1. 121. f. 105. 
Yar. 2., thicker, with a purple throat : Buccinum roseo- 
labiatum. Wolf, in Sturm, Fauna, t. 36, 37. 
In stagnant, and var. 1. slow running, waters. 
Animal yellowish, paler beneath. {Sturm, t. 34. 
and 35.) 
Shell an inch and a half long, and nearly an inch 
wide, thin and brittle, of a greyish white colour, often 
covered with an extraneous coat ; spire composed of 
six or seven volutions, which are rounded and tumid, 
tapering to a fine point ; the larger one striate longi- 
