188 DREDGING REPORTS; 
Report on the Pelagic Entomostraca (Calanide and Poly- 
phemide), by George S. Brady. 
Tae animals which form the subject of this report are free- 
swimming Crustacea of very minute dimensions, which occur 
often in countless numbers near the surface of the sea. They 
are, in fact, so numerous as to constitute the chief food of several 
kinds of fish. They are met with most abundantly in very calm 
weather, perhaps because they come most freely to the surface 
when the sea is smooth. In rough weather, such as oceurred 
during the time of the dredging operations this year, they are 
taken sparingly, owing to the difficulty of working the drift-net. 
It was for this reason, more than from any scarcity of the 
animals, that our captures were not very extensive, for the 
water was plainly seen to be swarming with them. 
Owing to the short time available for the preparation of the 
report of last year’s dredging expedition, the Entomostraca taken 
on that occasion were only cursorily noticed. On this account I 
have included in my table the captures of both years, specifying 
the localities for each species. The list comprises five species 
not previously recognized as British, Hvadne polyphemoides, 
Ichthyophorba denticornis, I. angustata, and Dias longiremis ; also 
a species probably referable to Phaénna spinifera, Cls. 
50 miles 100 miles Inside 10 miles 
E. off H, by N. off Fern E.N.E. off 
Tynemouth, Tynemouth. Islands. Holy Island. 
Evadne Nordmanni, Zoven common common — — 
Evadne polyphemoides, Leuckart scarce scarce ase —— 
Temora Finmarchica, Gunner abundant abundant — scarce 
Irenzeus Patersonii, Templeton not rare -——— scarce common 
Phaénna spinifera (?) Cls. common — scarce — 
Dias longiremis, Lid. common scarce abundant common 
Cetochilus helgolandicus, C7s. — scarce common —. 
Ichthyophorba angustata, C7s. common — common common 
~ denticornis, €/s. common —- common common 
The list above given differs very materially from that presented 
to the British Association in August last, the nomenclature I 
have here adopted being that of the recently published mono- 
graph of Dr. Claus.* From the figures and descriptions of that 
work it appears clear that Diaptomus longicaudatus, Lubbock, is 
* Die frei lebenden Copepden, mit besonderer Berucksichtigung der Fauna Deuts- 
chlands, der Nordsee und des Mittelmeeres. 
