160 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Noctiluca was less abundant, but the Copepoda had 

 become more numerous, since the visit on August 10th. 

 Diatoms appeared to be increasing, and Rhizosolenia was 

 extremely plentiful compared with the results obtained a 

 month before in Red Wharf Bay. The sea near Port 

 Erin had a rich supply of Copepods, but no Diatoms were 

 present. 



On September 14th one tow-netting was taken in 

 Red Wharf Bay, one at the entrance to the Mersey and 

 one in the vicinity of Port Erin. The results show some 

 differences between the two coastal areas, and a very great 

 distinction between the plankton of the coast and that of 

 the Central area. 



Rhizosolenia 



Ceratium tripos 

 Ceratium fusus .. 



Noctiluca 



Pleurobrachia . . 



Sagitta 



Autolytus 



Mitraria 



Crab zoea 



Crab megalopa .. 



Evadne 



Podon 



Copepoda 



Calanus 



Pseudocalanus 



Paracalanus . . 



Temora 



Centropages . . 



Anomalocera . . 



Acartia 



Oithona 



Oikopleura 



d Wharf 



Entrance 





Bay. 



to Mersey. 



Port Erin 



c. 



c, 



c. 



r. 



r. 



— 



c. 



c. 



— 



c. 



— 



— 



c. 



r. 



r. 

 r. 



r. 



r. 



r. 



c. 



r. 





— 



— 



c. 



r. 



r. 



c. 



— 



— 



fr. 



— 



— 



fr. 



— 



— 



fr. 



r. 



r. 



fr. 



r 



r. 



fr. 



— 



— 



fr. 



r. 



r. 



fc. 



— 



— 



fr. 



— 



r. 



fr. 



