30 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 
apparently spread in various directions from that point. 
Later in 1903 it made its appearance in the Skagerack ; 

Fic. 6. Some plankton nets, shear-net, &c., on S.Y. “Ladybird.” The 
Agassiz trawl is seen in the distance hanging from the derrick. 
[From a photo. by R. Okell. 
it was shortly afterwards found to be present in quantity 
in the S.E. part of the North Sea, near Hamburg; from 
this it spread northwards to the coast of Jutland, and in 
the following year appeared on the Belgian coast also; 
in all these regions it became established, and re-appeared 
year after year. In 1907 it had penetrated to the Baltic, 
to the North of Scotland, and southwards in the North 
Sea to the entrance of the English Channel. The 
Norwegian observers tell us that it made its appearance 
also in the sea off Bergen in that same year, and more 
recent reports show that it has continued in all these 
sea-areas up to the present time, in each year reaching a 
maximum in November and a minimum about May. 
We first noticed it in our bay gatherings at Port 
