590 Mr. JgrrnEvs's Supplement to the ** Synopsis of 
This section of Limneus belongs to M. Risso's genus Leachia, 
and the Stagnicola of Dr. Leach. | 
L. communis, p. 376. 
Var. a. magis elongata, labro intus vix reflexo. Dorking, 
Surry : Mr. Stutchbury. 
Var. 8. minor, testacei coloris, truncatulo affinis. 
L.fuscus. Pfeiffer i. 92. Taf. iv. fig. 25? 
Common in marshes along the banks of the Thames from 
Battersea to Woolwich. The gradation from one to another of 
the different species of European Limnei is so very slight, that 
unless, as M. Blainville once expressed to me, the stagnalis, 
palustris and pereger are excepted, there would properly be 
no species at all. 
L. elongatus, p. 376. 
Ireland (Rev. James Bulwer); Scarborough (Mr. Bean) ; and 
Norfolk (Dr. Leach); Rev. Dr. Goodall. 
L. Grayanus, p. 378. 
does not belong to the Pulmonobranchia ; but (on account of 
its animal) would form a curious anomaly in Férussac's sub- 
genus Paludina of the genus of the same name. In the form of 
the shell it approaches to some of the smaller Melanie. 
L. detritus, p. 378. : 
I have seen Dr. Turton's specimens of his Helix detrita, 
which are a true Bulimus, and very different from the above 
species. Dr. Pulteney's cabinet in the Linnean Society’s mu- 
seum contains several; but I did not observe any appearance 
of bands. It is, however, a very doubtful species both as to its 
habitat and locality. Férussac refers it without a doubt to a 
variety of the Bulimus radiatus of Draparnaud. 
Puysa. 
