20 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



February 4th and 10th, 1904. We have 

 noticed it in various parts of the Irish Sea in 

 previous years, but have never recorded its 

 occurrence. 



6. COELENTERATA. 



Phurobrachia was noted in August, Sep- 

 tember, October and December, 1903, and 

 May, June, July and September, 1904. The 

 pelagic eggs of Alcyonium were only observed 

 on January 6th and May 4th, 1904. 



7. Crustacea. 



Copepoda were found in every tow-netting, 



and in many cases were abundantly repre- 

 sented. The prevailing form appeared to be 

 Pseudo calanus, and was found in every collec- 

 tion. Temora was present from April 23rd to 

 November 7th, 1903, but was entirely absent 

 from the collections taken onward to May 26th, 

 1904. It then reappeared, and was repre- 

 sented in every subsequent gathering. Calanus 

 finmavchicus , although rare, was only entirely 

 absent in December, 1903, and January, 1904. 

 Acartia clausi was, on the whole, more abun- 

 dant than Calanus — the only months it was not 

 noted were December, 1903, January and 

 April, 1904. Centro pages hamatus was only 

 present in May, June, Juty, September, 1903, 

 and May, June, July, August, September, 

 190i. Oithona helgolandica, although present 

 throughout the whole period, was never lepre- 

 sented by more than a few specimens. The 

 other Copepoda, such as Paracalanus parvus, 

 Anomalocera, Parapontella and Isias were 

 only found on one or two occasions. 



