* 
TOW-NET GATHERINGS ON WEST COAST OF NORWAY. 81 
as females with ovisacs have never been noticed though 
carefully looked for. Their absence has recently led an 
eminent naturalist to throw out the theory that Calanus 
jfinmarchicus may be only the larval form of another 
species, the Hucheta norvegica, which is usually found 
only at great depths. It has often struck me as probable 
that Calanus finmarchicus casts its ova directly into the 
sea just as fishes do, and its profusion in these northern 
localities has furnished the opportunity of establishing 
what seems to be a clear proof of the truth of this 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 
of it almost exclusively. So the larval form theory of 
Calanus may, I venture to think, be considered disproved. 
Of the sixteen species of Copepoda obtained, twelve are ~ 
known in British waters, the other four being— 
Scolocithriz minor. 
Acartia laxa. 
Pontella. inermis. 
Oithona challengerit. 
The first of these, Scolocithrix minor, so far as I am 
aware, has heretofore only been found in the Indian Ocean,* 
and its presence near the Arctic regions is thus very 
interesting. The three latter are widely diffused, but none 
of them are common species. 
* Brady’s “‘Challenger” Report on the Copepoda, p. 58. 
6 
