SEA-FISHERIES LABORATORY. 267 



25.— Port Erin Bay, April 13th. 



Net used LA LB LA LB 



Depth in fathoms 



Catch in c.cm 26 24 26-5 45-5 



Biddulphia mobiliensis 10,000 6,000 2,500 3,000 



Chaetoceros contortion 82,000 33,000 500 9,000 



decipiens 2.000 3.000 — 1,000 



Coscinodiscus concinnus 5,000 5,000 6,500 3,500 



Rhizosolenia semispina 4,000 1,000 — 500 



Thalassiosira nordensk'toldii .. 5,000 — — — 



subtilis 12,000 6,000 1,500 24,000 



Lauderia borealis 5,000 1,000 — 500 



Ceratium fusus 2,000 — 350 



tripos 3,000 — — — 



Pleurobrachia pileus — — 3 — 



Medusoid gonophores 70 30 — 100 



Sagitta bipunctata 3 4 14 10 



Larval Polychaeta 1 ,000 500 2,000 650 



"Mitraria" 500 — 100 300 



Crab zoea — — — .20 



Mysis stage of Cr.angon 30 15 100 150 



Other larval Decapods 100 100 — — 



Podon intermedium 25 15 100 — 



Evadne nordmanni 25 15 300 — ■ 



Calanus helgolandicus * 200 75 300 350 



Pseudocalanus elongatus ... 1,500 1,500 3,700 2,150 



Temora longicornis 875 620 3,700 1,550 



Centropages hamatus — 25 — — 



Acartia clausi 400 — 800 1,050 



Oithona similis 675 475 1,000 300 



Paracalanus parv T u> 175 130 — — ■ 



Copepod nauplii 21,000 9,000 4,000 7,000 



juv 23,000 11,000 5,500 18,000 



Barnacle nauplii 3,500 2,750 4,300 6,000 



cypris stage 40 30 200 300 



Gasteropods, larval — — 1,000 500 



Oikopleura sp 1.500 L,800 2,500 3,000 



Fish eggs — 



Rockling — 2 — 2 



Green Cod 1 — — — 



Bib 2 — 1 — 



Spotted Dragonet — ■ — 1 — 



Topknot . 3 11 



Sprat — — 2 7 



Young fishes — 



Gadoid — — 1 1 



Cottus — — — 1 



