164 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



in Port Erin Bay, and another just outside the seaward 

 limit of this bay. 



Port Erin Outside Port 



Bay. Etin Ray. 



Biddulphia ab. ... r. 



Chaetoceros c. 



Coscinodiscus v.ab. ... r. 



Rhizosolenia r. 



Ceratium tripos r. 



Ceratium fusus r. 



Sagitta r. ... o 



Nauplii of barnacles r. 



Copepoda c. ... ab. 



Calanus — ... fr. 



Pseudocalanus fr. ... e. 



Temora fr. ... c. 



Centropages r. ... fr. 



Acartia fr. ... c. 



Oithona fr. ... fr. 



Long Rough Dab eggs — ... r. 



Solenette eggs fr. ... — 



Whiting eggs — ... r. 



Ling eggs — ... r. 



Sprat eggs — ... r. 



Rockling eggs — ... r. 



On this occasion Diatoms were confined practically 

 to Port Erin Bay. Their relative abundance was the 

 same as three days previously, and it will be noticed that 

 a few Rhizosolenia were now found. Outside the limits 

 of the bay we find an almost entire absence of Diatoms. 

 One or two Biddulphia and Coscinodiscus were all that 

 represented this important class of plankton. The 

 Copepoda in the bay appeared to be fairly stationary, but 

 out in the open sea they seemed to be increasing in 

 quantity when compared with the sample taken off the 

 Calf Island a few days before. Sagitta had also become 

 tolerably common in the open, but still remained verv 

 scarce inside. 



