of the Land and Fresh-water Shells of Suffolk. I67 



61. Helix putris. 



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 Helix putris of Linnaeus, Montagu, and Donovan ; but 

 the H. succinea of Dr. Maton and Mr. Rackett, which last au- 

 thors use the following words, " Linnaeus describes H. putris as 

 ' obtusa,' and ' mucrone obtusiusculoy characters which do not 

 belong to H. succinea." 



Now, with all deference, I affirm that those characters given 

 by Linnaeus 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 Linnaeus. 



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 strice. 



Very abundant in Essex, particularly in the garden pond at 

 Wrabness Parsonage. 



It 



