238 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



3. L. Inchard, near Cape Wrath, 15/8/11. Surface. 



Chaetoceras boreale 378,000 



breve 315,000 



„ constrictum 11,250,000 



criophilum 2,333,400 



debile 22,475,000 



„ decipiens 1,102,500 



densum 1,000,000 



„ didymum 16,400 



teres 95,750 



spp 7,500,000 



Corethron criophilum 400 



Nitzschia seriata 107,000 



Rhizosolenia semispina 43,300 



„ stolterfothii 33,600 



styliformis 12,600 



Thalassiosira gravida 7,500 



„ nordenskioldii 2,500 



Peridinium spp 10,000 



Ceratium fusus 200 



„ intermedium 8,000 



„ lineatum 420 



„ longipes 3,350 



„ tripos 11,350 



Tintinnidae 10,000 



Evadne nordmanni 840 



Pseudocalanus elongatus 420 



Acartia clausi 840 



Oithona similis 1,450 



Nauplii 6,000 



Oikopleura „ 630 



This is a typical phytoplankton. It was taken late 

 in the summer and it is the furthest north of our 



gatherings off the mainland of Scotland. The number of 



Diatoms is enormous, the gathering is dull green and 

 dense, and, as the list shows, a few species of Chaetoceras 

 are represented by nearly fifty millions of individuals. 





