208 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



20. Off-shore Station T. April l()tn, 1907. 



Net used Surface Surface Hensen Hansen 



Depth in fathoms 20-10 20-10 



Catch in c.cm 12 L8'5 1 58'5 



Biddulphia mobiliensis 5.000 5,000 500 1,000 



Chaetoceros contortum 39.000 28,000 19,000 1,200,000 



debile — — — 75,000 



decipiens 2,000 1,000 500 62,000 



sociale 4,500 75,000 



teres — 1.000 25,000 



diadema — 2.1.(100 



Coscinodiscus concinnus 1,000 1,500 500 12,000 



Ditylium brightwellii — — 6,000 



Eucampia zodiacus — 150 — — 



Rhizosolenia semispina 1,000 — — 12,000 



Thalassiosira gravida — — 500 12,000 



nordenskioldii ... 58,000 135,000 15,000 1,600,000 



subtilis 3,000 1,500 — 12,000 



Lauderia borealis 1,000 1,500 5,000 150,000 



Ceratium furca — 1,000 — — 



fusus 3,000 500 — — 



tripos 4,000 3,000 500 — 



Peridinium sp 1,000 1,000 — 37.000 



Medusoid gonophores 30 80 5 26 



Plutei of Echinoderms 1,000 1,000 — 



Sagitta bipunctata — — — — 



Tomopteris onisciformis — — — 1 



Larval Polychaeta — — — 20 



Crab zoea 2 1 — — 



Mysis stage of Crangon — — — 1 



Nephrops, 1st stage — — — 3 



Podon intermedium — — 1 — 



Evadne nordmanni 10 10 — — 



Calanus helgolandicus 25 1 3 23 



Pseudocalanus elongatus — — 18 130 



Temora longicornis 25 — 5 56 



Centropages hamatus 30 40 — 2 



Acartia clausi 500 500 8 14 



Oithona similis — 30 2 47 



Anomalocera juv 170 500 — — 



Copepod nauplii 3,000 2,000 500 — 



,, metanauplii — — — — 



juv 500 — 25 130 



Barnacle nauplii 10 10 2 25 



cypris stage 2 1 — 1 



Oikopleura sp 270 300 18 80 



Fish Eggs : Haddock 4 — — — 



Cod 5 31 — — 



Green Cod 15 33 — — 



Com. Dragonet 5 3 — — 



Whiting 60 89 — — 



Rockling — 1 — — 



Grey Gurnard — 6 — — 



Bib 3 23 — — 



Topknot 1 3 — 



Brill 1 — — — 



Bed Gurnard 1 — — — 



Sail Fluke 9 2 — — 



Dab '. 2 4 — — 



Scald fish 3 1 — — 



Long Rough Dab — 1 — — 



Sprat 3 6 — — 



Young fishes — Gadoid — — - — 1 



Weight 



10 



15 



7,000 

 26,0C0 



2,000 



l.ooo 



l.OOO 



1,000 



17,000 

 10,000 



1,000 



3,000 



500 



80 



500 



6 



2 



20 



6 



14 



5 



10 



10 



20 



350 



180 



10 



200 



40 



20 



5,000 



100 



600 



20 



5 



350 



1 



5 



22 



1 



10 



