216 - Dr, Maton’s and Mr, RackzTT's 
nalis. The shell figured in Test. Brit. t. 16. f. 7. is cer- 
tainly * more slender, and the volutions are more dia- 
phanous and turn more oblique" than H, stagnalis ; it 
is therefore probably the shell which Linnzus has de- 
scribed; but a question may arise, whether it ought to 
be considered as a distinct species. - 
We have not quoted the whole of the description 
given by Linnæus in the Fauna Suecica, on account of 
his comparing this. species, from. a Ango ei cren- 
cy, with H. nemoralis. — 
Found by Mr. Montagu in the canal between Chip- 
penham and Laycock, Wilts, 
56. | 
palustris. H. testa oblonga, anfractibus paululum rotundatis, 
t. 5.f.8. apertura ovata. 
| Lister Anim. Angl. t. 2. f. 22, 
Gualt. Test. t. 5. ene nee cd E 
| Seb. Mus. 3. t. 39. f. 39, 40. = s | pee 
Ginann. Op. Post. td. f. as E SIG 
Muller Verm. 2. p. 131. m. 326. 
Pennant Brit. Zool. À. t. 86. Y 136.B. 
Schrot. Flussconch. t. 7. f. 9, 10. 
Favanne Conch. t. 61. Í- F22. 
Linn. Gmel. p. 3658. - 
-~ Pulteney in Hutch. Dorset. p. 48. t. 18. Tf 18. 
ies Test. Brit. p. 373. t. 16. f. 10: 
. Donovan Brit. Shells, t. IE. 1. Ede & f. 2. 
Conch. t. 124. f. 24. . 
|  H.fontinalis. —— 
à Habitat io fosss eria, 
Testa ad 1 poll. longa, 4] tw Color griseus, sub cpidermide fusca, i in a ju- 
nioribus brunneus, Striis subtilissimis confertis, i i 
S — bus, exarata. H. stagnali affinis, sed minor, minus fragi 
"lis, nec apice 
subulata, 
