100 : REPORT—1863. 
pany with the Cyclopoid species, it belongs to the family Polyphemide, and does 
not therefore come within the range of the present paper. Temora finmarchica is 
included in our list on the strength of one mutilated specimen which, however, 
agreed so well with Dr. Baird’s figures as to leave little or no doubt about its 
identity. 
Northumb. & Durham. 
Guernsey. | Clyde. | Shetland. 
Littoral. | Pelagic. 
Cetochilus septentrionalis, Goodsir + 2 + — + 
Anomalocera Patersonii, Templeton| — oe _— _— _ 
Buichsptas spss «Serie. vat ies halts + - + 7 + 
Diaptomus longicaudatus, Lubbock; = + = + _— + 
Pontellina brevicornis (?), Zubbock|  — - + — _ 
Temora finmarchica, Ganner .. — > _— _ —_ 
yy VCLOK, LAYCDORG. rw os 515 aie + — _ + — 
Dias longiremis, Liljeborg ...... _— + + —_ —_ 
Ichthyophorba hamata, Liljeborg — oe - _— + 
On the Zoology of Hylton Dene, near Sunderland. By Guoren 8, Brapy. 
Hylton Dene is a ravine or dell, through which flows a streamlet—in north- 
country phrase a burn—tributary to the river Wear, which it joins about a couple 
of miles above Sunderland Bridge. The burn itself is, like the Wear at that 
point, subject to tidal influence; but the adjacent pools of which we have to speak 
are above the level of. high water at ordinary spring tides. On a flat expanse on 
each side of the burn are situated several small and very shallow pools, the depth 
of which is mostly on about six or eight inches. Zoologically we may divide them 
into three groups in the order of their proximity to the river Wear; and we find 
that the proportion of chlorides contained in their water regularly decreases as we 
recede from the river. As regards their organized inhabitants, the pools differ no 
less conspicuously than in their inorganic constituents. Those of the first and most 
saline group are marked chiefly by the presence during the autumn months of two 
Nudibranchs, Alderia modesta and Limapontia depressa. They contain also, in com- 
mon with the second group, various Crustacea: Gammarus locusta, Orchestia littorea, 
Palemon varians, Crangon vulgaris, Corophium longicorne, Spheroma, sp., and Temora 
velox, an Entomostracan of the order Calanidee. Besides these, there are two or three 
species of Foraminifera and some Annelids, I think of the genus Nereis. The second 
group is characterized more by the absence of certain species which occur in the 
first and third, than by any inhabitants peculiar to itself. The single large and 
deeper pool which forms our third group differs in nothing, a its peculiar 
Crustacean fauna, from an ordinary freshwater pond. It is of tolerable depth, but 
very narrow—more like a tortuous ditch than a pond; and it affords a home to 
numerous Notonecte, Beetles, Water-rats, to a few individuals, small and stunted, 
of Limneus pereger, and to a beautiful Polyzoon, Plumatella repens. The Ento- 
mostraca of this pool are all purely freshwater species, such as Cyclops quadricornis, 
Candona lucens, and several Cyprides. The most interesting inhabitants are, how- 
ever, some of the larger Crustacea, Palemon varians, Mysis vulgaris, and Coro- 
phium longicorne, all of which occur in great numbers. 
Estuarine swamps, such as this, seem to be the nearest analogues we now possess 
of the extensive lagoons of the Carboniferous period. To the paleontologist it 
must be a matter of considerable interest to note the association of species in 
such localities; and I think enough has been said to show that considerable cau- 
tion should be used in pronouncing upon the saline or freshwater nature of any 
deposits merely from the nature of the animal forms which they enclose. 
Notes on Foraminifera new to the British Fauna. 
By Henry B. Brapy, F.L.S. 
After some preliminary remarks on the various methods which have been proposed 
