of the Land and Fresh-water Shells of Suffolk. 167 
61. HELIx purris. 
Helix succinea. Trans. Linn. Soc. vol. viii. p. 218. 
Very common upon water plants by the sides of rivers and 
ponds. 
They are of an unusually large size at Campsey Mere. This 
is the Heliv putris of Linnæus, Montagu, and Donovan ; but 
the H. succinea of Dr. Maton and Mr. Rackett, which last au- 
thors use the following words, ** Linnæus describes H. putris as 
‘obtusa,’ and ‘mucrone obtusiusculo, characters which do not 
belong to H. succinea.” 
Now, with all deference, I affirm that those characters given 
_ by Linnzus to H. putris are exactly applicable to the H. succinea 
of Dr. Maton and Mr. Rackett, and that during twenty years 
diligent investigation of the Land and Fresh-water Shells, I never 
found a specimen to which they did not apply. 
I must add that Draparnaud, in his List of Synonyms, rightly 
refers his Succinea amphibia to the H. putris of Linnæus. 
64. HELIX FOSSARIA. "Trans. Linn. Soc. vol. viii. p- 217. 
In a pond at Claydon; in Holbrook and Stutton streams ; 
and in the river Stour at Higham. 
A curious whitish variety is found at Levington, on Harper's 
cliffs, under stones where a little water has collected. Another 
variety I have taken in Holbrook stream, in which the volutions 
are more oblique than usual ; there is in fact as much difference 
betwixt it and the true H. fossaria, as between H. stagnalis and 
H. fragilis : the two lower volutions are also longitudinally and 
transversely crossed with whitish série. — 
Very abundant in Essex, particularly in the garden pond at 
Wrabness Parsonage. 
It 
