294 TRANSACTIONS LIVERPOOL BIOLOGICAL SOCIETY. 



of the truth of tliis theory. For on examining many 

 hundreds of them together, especially in the collection 

 No. 4, made at Hammerfest, I find small quantities of 

 specially granular ova scattered about, and in two 

 instances as if just ejected from the animal, but entangled 

 by the swimming feet as the animal met its doom. It is 

 confirmatory of these being the ova of Calanus that they 

 appear only in such other gatherings as contain in great 

 abundance this species and it almost exclusively." 



Acartia (PL B, fig. 3) is present throughout the 

 year, but is usually not very abundant. In January, 

 February and March the numbers are mostly units and 

 tens, rarely reaching hundreds, the highest being 450 on 

 February 25th. In April there is an increase to 1,000, on 

 the 19th; May is lower, reaching only 800; June and 

 July show several hauls of over 2,000 ; August has 1,400 

 and 1,100 ; September reaches 2,350 on the 29th; October 

 the same number on the 27th; November shows hundreds 

 only, and December the same, with 1,100 on the 17th. 

 This agrees fairly well with last year's record, the highest 

 numbers are again in September and October, but last 

 year's maximum, 11,000 on October 8th, was much higher 

 than anything attained this year. 



Oithona is the most generally abundant species 

 throughout the year. The numbers run into thousands in 

 every month except April, and the maxima are 15,800 in 

 January; 10,000 in May; 20,000 in July, and again in 

 August; and 50,000 on October 18th. On the whole 

 these numbers are greater than those of last year, when 

 the maximum was reached with 40,000 on September 

 14th; the previous year showed 30,000 on September 

 20th. But the general curve of the species throughout 

 the year is the same, and the climax is reached in late 

 autumn in each case. 



