SEA-FISHERIES LABORATORY. 297 
catches of Diatoms, Dinoflagellates and Copepoda at each 
of these three Stations with the surface and the weight 
(10-0 fathoms) nets on all occasions (except April 11th, 
accidentally omitted, but not differing from the rest) when 
hauls were taken on the same, or an adjoining, day. 
On the whole, larger catches were obtained at 
Station IIT than at Station I, and at Station I than at 
Station IJ—both in spring and in summer—as the lines 
In April the 
is due to the presence of 
of averages at the foot of the table show. 
preponderating influence 
Diatoms, and in 
August to the Dinoflagellata and 
oa ton) 
Copepoda. For a marked contrast in the nature of the 
catches see April 29th, with over a million of Diatoms in 
the weight net, and August 4th, immediately below, with 
It will be noticed that Station III which is so rich in 
Diatoms, in April, is the poorest in Dinoflagellata ; while in 
none. 
summer it is the richest in that group and also in Copepoda. 
Although there is no high Copepod maximum in the 
spring of 1908, such as occurred in April 1907, and 
although throughout most of the year no great swarms of 
species appeared like some of those in the previous year, 
still there are some hauls that showed a fair number of 
species represented by moderate figures, and we quote 
The first two columns are hauls 
in Port Eri Bay on September 14th, and all the rest are 
seven hauls at Station I. on September 15th. The only 
really large number is the 40,000 of Orthona semalis in the 
coarse net on September 14th. 
Form 77 as an example. 
77.—Bay (1 & 2) September 14; and Station I., September 15. 
| 7 | ih 2. | IEeneen ‘Hensen |Nansen /Nansen 
| . Net used. | Goarse.| Fine. | Coarse. | Fine. 20-0 | 20-10 | 20-0 | 20-10 
| 7 (open).| (open). 
Calanus helgolandicus ...... 1,370 15 260 2 re 20"| 3 14 
Pseudocalanus elongatus 10,000 | 200 1,350 | 6 | 530; 75} 600; 300 
Temora longicornis ......... 3,000 | 70 50 | 20 12 10 5 
Centropages hamatus ...... 350 | 10 300 1 ZON a ale 10 5 
|Anomalocera pattersoni ... — | — 2 eet ce — _ — | 
Paeattia ClAUS...............-5. ir 600 100 700 2 NGO | 120 40 80 | 
POiwhona similis ............... | 40,000 POOR LOOOOn me SOM OTOulmn225— 6 520) ) e1LO 
|Paracalanus parva ......... | 9,000 | 150 | 1,400 | 2 | — 80 40 20 
Bisias Clavipes ............... | ROOF nie te 520 3} 40 12 20 5 
Diaixis hibernica ............ | oo _ ~ — — 10; — 
I | | 
