166 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



Inshore collections were taken on August 28th off 



Niarbyl and between Peel and Jurby, at a distance of 

 about seven miles apart, and gave the following results : — 



Between 

 Off NiarbyL Peel and Jurby. 



Chsetoceros fr. ... c. 



Ceratium tripos fr. ... c. 



Autolytus c. ... r. 



Crab zoea r. ... r. 



Crab megalopa — ... r. 



Podon r. ... — 



Evadne r. ... — 



Copepoda c. ... c. 



Calanus r. ... r. 



Pseudocalanus r. ... — 



Paracalanus r. ... fr. 



Temora r. ... — 



Centropages r. ... r. 



Isias r. ... — 



Acartia fr. ... fr. 



Oithona c. ... c. 



Oikopleura fr. ... r. 



Mackerel eggs r. ... — 



Rockling eggs c. ... r. 



Quantity of Material 3 c.c. ... 13 c.c. 



These collections again show considerable variation 

 in quantity of plankton at different places on the same 

 day. Diatoms were more numerous off Peel than at 

 Niarbyl, the other organisms also showed corresponding 

 changes in distribution at the two stations. 



On September 1st a sample of the plankton in the 

 open sea four miles West of Bradda Head was taken, and 

 also an inshore one off NiarbyL The latter is about eight 

 miles East-North-East from the former station. 



