SEA-FISHERIES LABORATORY. 201 



71.— Off-shore Station I, Aug. 21st, 1907. 



Net used Surface Surface Hensen Nansen Nansen Weight 



Depth in fathoms 20-10 20-0 20-10 10-0 



Catch in com 15 7 0*5 2-5 2 8-5 



Biddulphia mobiliensis — — — 25 — — 



Ceratium furca — — 10 — — — 



fusus — — 80 25 50 



tripos 250 1,500 700 100 600 1,300 



Peridinium sp — — 30 50 25 — 



Trochiscia sp — — 10 — — — 



Sagitta bipunctata 12 14 3 30 10 25 



Tomopteris onisciformis — — 3 — — — 



Larval Polychaeta 100 100 



Crab zoea — 



„ megalopa — 



Mysis stage of Crangon 1 



Eurydice inermis — 



Nephrops 1st stage — 



Podon intermedium 10 



Evadne nordmanni — 



Calanus helgolandicus 100 



Pseudocalanus elongatus 60 



Temora longicornis 25 



Centropages hamatus 80 



Anomalocera pattersoni 7 



Acartia clausi 320 



Oithona similis 2,200 



Parapontella 6 



Thaumaleus rigidus — 



Copepod nauplii 10,000 



juv 2,600 



Gasteropods, larval — 



Lamellibranchs, larval — 



Oikopleura sp 360 



Fish eggs, Goldsinny 1 



In Form 66 we give the results of four hauls taken 

 in Port Erin Bay about the middle of August (14th to 

 17th) to show again a plankton where Diatoms were 

 absent, but where Copepods were present in abundance, 

 amounting to 25,000 in the case of Oithona simdlis on 

 August 17th. The three hauls of August 14th, 15th and 

 16th are very similar in total amounts, and not unlike in 

 some of the constituent items, but the haul on August 

 17th showed nearly double the total quantity, due mainly 



3 



1 



— 



1 



1 



1 



10 



~ 



1 



3 



6 



40 



1 



20 



2 



10 



50 



15 



125 



200 



2 



10 



8 



30 



50 



300 



375 



550 



40 



5 



65 



40 



100 



75 



5 



5 



— 



80 



15 



— 



— 



— 



4 



800 



— 



110 



55 



750 



8.000 



125 



1,000 



500 



11,000 



10 



— 



5 



1 



1,350 



— 



30,000 



750 



2.000 



15,000 



5,000 



240 



500 

 25 

 50 



500 



2,000 



_ 



10 



25 







200 



6 



500 



— 



200 



