SEA-FISHERIES LABORATORY. 



295 



and three in August, so that the maximum, though low, 

 appears to be spread over these three months. 



Anomalocera patersoni. — This species was present in 

 eleven hauls taken during April, May and June, the 

 largest being 4,800 on April 24th, and the others ranging 

 from 340 to 2. The large April haul probably represents 

 an unusual invasion of this oceanic species. 



Centropages hamatus. — Centropages is only entirely 

 absent from our nets in two months during 1914, namely, 

 January and December, but the numbers are, as usual, 

 not very high. The maximum was 500, on August 20th. 



We need give no further records of Microcalanus 

 pusillus. It is apparently no longer of importance in our 

 district, and there are several other forms, such as Isias 

 clavipes, which are quantitatively more worthy of record. 



The monthly average hauls for the eight more 

 important species of Copepoda in 1914 are as follows : — 



1914. 



Calanus. 



Pseudo- 



Temora. 



Centro- 



Anomal- 



Acartia. 



Oithona. 



calanus. 





pages. 



ocera. 







1,175 



6 











131 



3,302 



855 



4 



1 







50 



5,520 



1,091 



197 



6 







35 



5,755 



13,332 



3,369 



15 



611 



643 



7,392 



2,119 



2,160 



73 



28 



2,192 



5,200 



11,003 



4,229 



21 



4 



5,501 



5,891 



4,998 



3,722 



87 







4,720 



23,860 



10,079 



2,018 



103 







5,444 



11,932 



3,731 



853 



98 







2,707 



16,937 



4,020 



92 



69 







4,409 



8,987 



1,664 



12 



1 







921 



45,845 



1,456 















303 



14,874 



Para- 

 calanus. 



January ... 13 



February ... 3 



March 2 



April 613 



May 144 



June 610 



July I 1,540 



August 1,687 



September ; 74 



October ... 47 



November... 19 



December 2 



257 



555 



91 



67 



48 







2,019 



5,857 



44,207 



9,746 



6,013 



1,817 



Again we find there arc slight differences in detail 

 between this and other years, but on the whole the curves 

 are in general much the same, and the history throughout 

 the year can be readily followed by the eye. For 

 example, Temora is obviously a summer species with its 

 maximum in June and a minimum in mid-winter, while 



