PROCEEDINGS OF THE CONCHOLOGICAL SOCIETY. 175 
Mr. William Nelson was elected President for the coming year, and Mr. 
Henry Crowther Hon. Secretary. 
Meeting held by the invitation of the President at Crossgates, Oct. roth. 
A paper, illustrated by diagrams and specimens, was read by Mr. Nelson, 
on ‘The Wandering Mud-Snail Limnea peregra.” 
Mr. Nelson showed his large collection of tracings of British and foreign 
Lininaeine. 
On behalf of Mr. H. A. Pilsbry, Philadelphia, were shown specimens of © 
a new species of P/anorbis allied to our P. albus, from the District of Columbia. 
The Rey. Ashington Bullen sent a living specimen of Helix memoralis 
on which was developed an additional anterior tentacle. It was noticed that 
this third tentacle, which was between the ordinary anterior pair and dis- 
tinctly free and nearer the right than the left lateral one, was extended or 
withdrawn along with the others. 
Mr. Alfred Sich exhibited a living reversed specimen of Helzx rotundata, 
from his garden at Chiswick. This specimen and another are the only recent 
reversed forms of this species known. 
Mr. J. T. Carrington sent living specimens of Avion ader var. alba from 
Rickmansworth, Hertfordshire. 
Mr. J. W. Taylor read a communication from Mr. A. G. Stubbs, of 
Gloucester, illustrated by a diagram and specimens. When gathering shells 
along Penally Road, Tenby, Mr. Stubbs noticed that in the crevices of a 
wall above which the hedge had been cleared and grass grew, all the speci- 
mens of Helix aspersa were deformed, whilst in the walls over which the 
hedges grew on each side of this particular portion, the shells were normal in 
growth and form. 
Mr. R. Wigglesworth, of Accrington, sent a fine series of Lzmnea 
aurviculayia, and a communication respecting their peculiar development and 
growth in a pond at Clayton-le-Moors. Mr. Wigglesworth found that many 
of the shells when young—January to March—presented labial reflections, 
which from April to August disappeared before the normal curvature of the 
shell, but that on nearing maturity many of the species again reflected the 
shell-lip, resuming in this way the labial form of their younger stage—the 
adult reflected lip being adorned with a nacreous deposit. 
For Mr. Lionel E. Adams were exhibited specimens of Helix nemoralis 
with a divided third band, and a translucent example of Helix hortensis. 
Mr. Charles Oldham sent spirit specimens of Myalinza cellaria from 
Romiley, Cheshire, infested with long parasitic worms. 
It was resolved to accept the invitation of Mr. J. Whitwham, of 
Huddersfield, to hold the next meeting at his house, and inspect his col- 
lection of Unionidee. ; 
