A STUDY OF THE MARINE MOLLUSCA 
OF NORTHUMBERLAND 
(Based upon the Collection of the Cdllehcoats Marine Laboratory). 
By G. P. BULMAN. 
The study of this branch of the animal kingdom has not been 
carried out for a time sufficiently long to enable a thorough investi- 
gation to be made. A list of those species which have been taken 
in the neighbourhood since the laboratory was established, with 
such notes as can be made as to their frequency, &c., may, however, 
be of some value as a nucleus around which a catalogue may bo 
formed capable of comparison with that of Mr. Alder in relation 
both to vertical and geographical distribution. A list was at first 
attempted in which the species should be arranged according to the 
“ zones ” they inhabit, but this was discarded owing to the great 
overlapping — particularly on rocky parts of the coast. The listing 
in a classificatory form appears to be more convenient. The names 
of the species are all taken from Mr. Jeffreys’ work (Brit. Conch., 
18(>2), but where these differ from those of Mr. Alder’s list, the latter 
are also given. I have to gratefully acknowledge much valuable help 
from Mr. R. Howse, M.A., of the Hancock Museum in Newcastle, 
in determining many of the species. 
PELECYPODA. 
Family — Anomiid.t.. 
Genus — Anomia. 
A. ephippium, Linn. 
Including A. squamula, Mont., A. aculeata, Miill., and A. 
cylindrica, Gmel. 
Not very common, in the coralline zone. One young and living 
specimen was found in a pool left by the receding tide on Tynemouth 
sands. 
A. pat f.lliformis , var. striata, Linn. 
A. striata , Lam. 
Frequent, on all parts of the coast. 
Fain i ly — 0 str eip.e . 
Genus — Ostrf.a. 
O. edulis, var. parasitica, Linn, (a variety of the common oyster). 
<). parasitica , Turt. 
Cat. Moll. Northll. and llur., 1848. 
