214 



TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 







CO 



g 





CQ 









03 





1911 





Is 



o 

 O 



eg 



o 



CD 

 O 



o 



e3 



.* 





d 

 d 



eg 



1 



o 





d 



■"O 



O 



u 



g 



"-£ 



o 



o 



o 





e3 



d 



CD 



a 



% 



o 



eg 



pd 





u 

 o 





'eg 



02 



© 



<x> 



d 



o 





e8 







o 



PM 



H 



O 



<1 



<1 



O 



Oh 



§ 



Jan. 



4 



370 



1 











60 



2,589 



99 



14 



Feb. .. 



8 



460 















17 



1,993 



61 



38 



Mar. . . 



1 



476 



63 











17 



428 



23 



5 



April .. 



4 



1,554 



305 



7 







197 



675 



7 



13 



May .. 



15 



1,501 



282 



42 







1,627 



5,647 



39 



11 



June . . 



85 



4,168 



4,675 



81 



1 



4,858 



11,745 



326 



32 



July .. 



339 



12,012 



4,706 



45 



1 



5,376 



52,393 



667 







Ausj. . . 



32 



8,916 



435 



34 







14,049 



20,755 



13,372 







Sept. .. 



68 



4,129 



69 



28 







4,234 



9,000 



14,100 







Oct. .. 



'60 



2,332 



27 



1 







6,181 



5,024 



5,170 



12 



Nov. .. 



3 



3,056 



3 











222 



11,912 



5,506 



31 



Dec. .. 



4 



1,184 



2 











51 



6,587 



1,860 



89 



It must be remembered that tbe above figures are 

 only tbe monthly averages, per haul, and tbat many of 

 tbe individual bauls in each month were much larger, as 

 we shall show below. Anomalocera, as it appears in the 

 above table, would not be worthy of record were it not 

 that it has assumed more importance in other years, and 

 may do so again, and consequently it is well to preserve 

 this year's record for comparison. 



If we arrange the six most abundant of these species 



of Copepoda in the order of their abundance with their 



total numbers — and add the totals for the two previous 



years — they are as follows : — 



1911. 1910. 1909. 



Oithona similis 1,155,108 872,678 465,066 



Pseudocalanus elongatus 365,983 368,326 309,973 



Paracalanus parvus 351,088 217,633 54,120 



Acartia clausi 323,633 340,631 63,373 



Temora longicornis 106,359 147,043 62,659 



Calanus helgolandicus 5,843 15,481 21,412 



This list shows that the only difference in the order 

 is that this year Paracalanus parvus comes above Acartia 

 clausi, while it was below in 1910 and 1909. The 



