208 
LIMN^ADJE. 
outer individual impregnates another individual, so 
that the animals form a more or less long chain 
floating on the surface of the water. 
In the Danube this species grows to four times 
the size of the usual English variety, but does not 
otherwise differ from it. 
The teeth of Z. stagnalis are figured by Otto 
Goldfuss, 48. t. 7. f. &c. 
b. Shell subcorneal or elongate ; lohorls gradually eU’- 
larging ; mouth generally shorter than the spire. 
(Stagnicola LeachJ) 
93. 4. Limnjeus palustris. Marsh Mud Shell. — - 
Shell conic-oval, with six rather tumid volu- 
tions, the lower one somewhat angular by 
raised transverse and longitudinal striaB ; mouth 
ovate ; throat brown or violet, (t. 9. f. 107.) 
Buccinum palustre. Muller^ Verm.ii, 131. — Helix palustris, 
Gmelin^ 3658.; Mont. p. 373. t. 16. f. 10. — Helix stagnalis, 
var. /3. Penn. B.Z. 86. t. 13. f. 136. b. — Helix limosa. 
Linn. S. N. i. 1249. ? — Helix fragilis. Pulteney^ Dorset. 48. ; 
Donor. B. S. v. t. 175. f. 1. — Helix fontinalis. Donor. B. S. 
vi. 175. f. 2. and — Helix Corvus. Gmelin., S. N. 3665. 
—Helix striolata. Olir. Adriat. — Limnea Corvus. Dupuy^ 
Cat. — L. obscurus ; L. limbatus ; L. lamnosus. Ziegl. — L. 
fuscus. Pfeiff. Dent. Moll. 92. t. 4. f. 25. — L. vogesiaca, 
and L. disjuncta. Put. Moll. Vog. 58. — Limneus palustris. 
Drap. p. 52. t. 2. f. 40— -42., and t. 3. f. 1, 2. ; Alder Cat. 
114. ; Turton., Man. ed. 1. 123. f. 107. — Limnaeus palustris. 
Bossm. Icon. i. 96. f. 51, 52. ; Forbes and Hanley., B. M. iv. 
180. t. 124. f. 2. — Lymneus palustris. Brard, p. 136. t. 5. 
f. 6, 7. — Lymnaea palustris. Fleming., Ency. Edinh. vii. 77. ; 
Lamarck., vi. ii. p. 160. — Stagnicola communis, Leach., Syn. 
Moll, lok — Limnea palustris. Flem. B. A. 274. — Bulimus 
palustris. Brug. E. Meth. 302. — Lymnea fragilis. Kenyon^ 
Mag. N. Hist. ii. 425. f. 182. e. 1829. — Limneus communis. 
