352 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY 



Here in contrast is an example of two very dissimilar 

 hauls taken on April 9th at Stat. III:- 



Total Polychaet 



Catch. Diatoms. Dinofl. Copepoda. larvae. 



Otter 



Stern 



0-8 c.c. 



1-2 



21,425 



43,800 



600 

 250 



4 

 15 





 100 









Weight ... 



1-6 



20,000 



3,800 



218 



800 







Echin. 

 larva?. 



Copep. 



Nanpl. 



Oiko-. 

 pleura. 



Fish 



Eggs. 



Otter 



Stern 





20 

 1,000 



200 

 500 



1 

 50 



54 

 19 



Weight ... 





2,000 



7,800 



800 



2 



We give also an example of a case where, although 

 the two nets caught the same quantity, the catch was 

 made up of very different organisms, viz., April 2nd, 

 Stat. Ill: — 





Total 

 Catch. 



Diatoms. 



Dinofl. 



Copepoda. 



Polychaet 

 larvae. 



Otter 



Stern 



4 c.c. 



4 



139,000 

 116,750 



2,750 

 4,000 



1.316 

 2,511 



750 

 1,000 



Weight 



4-7 



147,750 



2,550 



2,790 



1,500 







Echin. 

 larvae. 



Copep. 

 Naupl. 



Oiko- 

 pleura. 



Fish 

 Eggs. 



Otter 



Stern 





750 

 500 



9.000 

 14,000 



530 

 1,000 



4 

 3 



Weight 





250 



5.000 



1,100 



5 



Ln most cases the similar net, used at the same time, 

 widi a weight attached so as to keep it a few fathoms 

 below the surface, gave rather a larger haul. We have 



