( 505 ) 
XXX. A Supplement to the ** Synopsis of Testaceous Pneumono- 
branchous Mollusca of Great Britain." By John Gæ yn Jeffreys, 
Esq., F.L.S. 
Read June 21, 1831. 
Monz extensive opportunities and the assistance of scientific 
friends enable me to offer a few remarks, by way of addition 
and correction to the list of Mollusca which the Society lately 
did me the honour of publishing in their Transactions. Except 
in a very few instances I shall, as before, only notice such habi- 
tats for the species as have fallen under my own observation, or 
oeen communicated to me by others. 
SUCCINEA. 
S. putris var. a. Linn. Trans. Soc. vol. xvi. p. 325. 
Mr. Alder, in a valuable paper on the land and freshwater 
shells of Newcastle-upon-Tyne, which is to be found in the first 
volume of the Transactions of the Natural History Society of that 
place, describes this variety under the specific name of oblonga. 
Dr. Leach fell into the same mistake ; and has moreover, in his 
inedited work on the British Mollusca, referred it to the S. ob- 
longa of Draparnaud. It is a very variable species. 
S. oblonga, p. 325. 
Sparingly in ditches on Braunton Burrows, North Devon. I 
observed specimens in the Hon. Lady Elizabeth Finch’s collec- 
3T2 tion 
