384 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



12,400 on October 20th, 19,500 on October 23rd, and 

 18,700 on October 27th. It is probable that the Scallop 

 bed (Pecten opercularis) opposite the mouth of Port Erin 

 Bay contributes largely to this supply of larvae. 



Medusae and Ctenophora. 



Medusae were present throughout the year with a 

 maximum in June to July, and a secondary one in Septem- 

 ber. The chief records were 1,180 on June 11th, 1,820 on 

 June 20th, 1,940 on June 24th, 1,182 on July 21st, 2,015 

 on July 28th, and 2,657 on September 8th. 



Although Pleurobrachia did not occur in any numbers 

 in our Port Erin gatherings this year, it seems to have 

 been present in enormous profusion on the Lancashire 

 Coast in July.* Large hauls were obtained in the Barrow 

 Channel and the open sea outside at the beginning of that 

 month, reaching a maximum about July 10th. It is 

 curious that this unusually large swarm did not also appear 

 at the Isle of Man. 



Fish Eggs.t 



Rockling eggs were present in varying quantities up 

 to the end of September, the maximum being in April, 

 with an average of 123 per haul. 



The other fish eggs ranged from the end of January 

 to the middle of August, with a maximum in March of 

 74 per haul. 



The numbers are rather larger this year than last, but 

 it is difficult to attach any significance to these annual 

 variations. 



* See remarks by A. Scott, on p. 109 of this volume. 



t See also the separate report by A. Scott, at p. 116, dealing specially with 

 the pelagic fish eggs collected by the Fisheries Steamer in various parts of 

 the Irish Sea. 



