96 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



The material examined during the past year has given 

 us results which vary very little from those already given 

 in former Reports. The following are a few of the more 

 noteworthy organisms observed: — 



My sis occurred in many of the gatherings throughout 

 the year, but only a few individuals were present in each 

 tow-netting. They were very common during the 

 whole year in the shore pools in our neighbourhood. On 

 September 14th, immense number of young Mysis were 

 observed in the channels near Baicliff. This is un- 

 doubtedly one of the most valuable sources of food supply 

 for young fishes. 



Crangon, Pseudocuma, Gammarus, and Eurydice were 

 occasionally noticed, but only one or two individuals at a 

 time. On a warm day, when the sea is calm, numbers of 

 Eurydice may be seen disporting themselves on the 

 surface. In their movements they are not unlike the 

 "Whirligig" beetle of the fresh-water ponds. 



Copepoda — Eurytemora, Acartia,Paracalanus, Temora, 

 Calanus, Pseudocalanus, and Oithona, were present more 

 or less throughout the year, but never, as a rule, in any 

 quantity. In a few of the gatherings from the vicinity of 

 the Bar Lightship, Eurytemora was, on one or two 

 occasions, very common. The striking difference between 

 local and off-shore collections was clearly demonstrated 

 by the comparative scarcity of Copepoda in-shore. As 

 early as January 10th one-fifth part of the tow-nettings, 

 taken by the " John Fell," five miles north of the Selker 

 Lightship, consisted of Calanus, Paracalanus, and Acar- 

 tia. At the same time, only a few individuals were taken 

 in local gatherings. 



At a very early stage in the life history of most fishes, 

 Copepoda play an important part as a food supply. The 

 majority of the young flat fishes — Plaice, Flounder, Dab, 



