3b44 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 
Exhibits were placed on the table by the following :— 
B.B.Woodward: Specimens of Opeas clavulus, Fér. (?), Mauritius (?), 
and Zonitoides minusculus (Binney), from a hothouse in Nottingham, 
the property of Mr. B. Sturges Dodd. 
A. Reynell: <Achatina fulva, Brug., from Calcutta, a species 
introduced there by Dr. W. Baird. 
K. R. Sykes: Specimens of Pholadidea and Doto from Plymouth. 
R. H. Burne: Tracks made by a snail feeding on lichen-covered wood. 
N-OUTErS.. 
Nore ON THE EMBRYONIC SHELL oF Pranorprs. (Read 8th May, 
1903.)—When some eight years ago I had the honour of contributing 
a short paper on the sinistral character of the shell of Planorbis, 
T was compelled from lack of material to illustrate my remarks by figures 
from Fischer’s paper on the subject. Having recently obtained some more 
Embryonic Shells of Planorbdis. 
embryos, I now venture to give three camera lucida drawings which may 
convey a better idea of the sinistral form of the shell. It will be noticed 
that the surface is covered with fine rows of minute points. 
J. H. VAN STONE. 
Nore ON THE OCCURRENCE OF PLANORBIS MARGINATUS, DRAP., AND 
LIMNZ®A PEREGER (MU1u.) in THE Post-PLioceNE oF Boenor, Sussex. 
(Read 8th May, 1903.)—The deposit in question was laid bare during the 
construction of a sewer in a field between Bognor and Felpham, known as 
the “Sluice Patch,” for which purpose a trench about 12 feet deep had to 
be cut. The alluvium here showed a thickness of about 6 feet, and 
contained many valves of Scrobicularia plana (DaC.). Below the alluvium 
was some two feet of a sandy clay, crowded in places with plant remains. 
Cardium edule (Linn.), Scrobicularia plana (Da C.), and Paludestrina 
stagnalis (Bast.) were plentiful ; the two former species had evidently 
lived and died there. This sandy clay in some parts was nearly black 
with carbonaceous matter, and it was here that LZ. pereger (Miill.) and 
P. marginatus, Drap., occurred. They could not be said to be plentiful, and 
were probably carried to their present position by means of a stream from 
some more inland locality, as one would hardly have expected them to have 
lived in company with the before-mentioned marine or estuarine species. 
