206 LIMNJEADiE. 



when we shall have received more specimens and are 

 able to observe the animal. 



92. 3. LiMN^us stagvalis. Lake Mud Shell. — 

 Shell oval, subulate, pointed, brittle ; spire 

 acute ; whorls five ; lower volution much in- 

 flated, and somewhat angular ; the suture deep, 

 (t. 9. f. 104.) 



Limneus stagnalis. Drop. p. 51. t. 2. f. 38, 39.; Alder, Cat. 

 114.; Turf on, Man. ed. 1. 121. f. 104. — Lynineus stagna- 

 lis. Srard, p. 133. t. 5. f. 1. — Lvmneus stagnalis. De 

 Montfort, ii. p. 268. Limnea stagnalis. Flem. B. A. 273. ; 

 Soiverhy, Gen. f. 1. — Lymnasa 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. Midler, Verm. 

 327. — Bulinius stagnalis. Brug. E. M. 303. — Lymneus 

 major. Jeffreys, Linn. Trans, xvi. 375. — LimnsBus stagna- 

 lis. Rossm. Icon. i. 95. t. 2. f. 49.; Forbes and Hanley, 

 B. M. iv. 274. t. 124. f. 4, 5. — Lymneus lacustris. Stiider. — 

 L. bicolor. Midilf. — L. appressa. Jay, — Turbo stagnalis. 

 Ba Costa, 5. C. 93. t. 5. f. 11. 



Var. 1., thinner, whorls rather more oblique and less ventri- 

 cose (t. 9. f. 105.) : Stagnicola eleuans. Leach, Syn. Moll. 

 104. ; Schroet. Flnss. Conch, t. 7." f 6. ? — Helix fragilis. 

 Linn. S. N. 1249. ?; Mont. T. B. 369. t. 16. f. 7. — Lymna;a 

 fragilis. Flem. E. Ency. vii. 77. — Limneus fragilis. Turton, 

 Man. ed. 1. 121. f. 105. 



Var. 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. {Sturin, 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- 



