1908] - Decapod Urustaceans. 45 
been dredged at any great depths. Still it was known only through 
the scanty numbers of individuals that the rough dredging imple- 
ments ordinarily used were able to bring up, or else through the 
ehance discovery of specimens in the stomachs of deep-water fish 
(skate, ling, brosme, &c.). 
It was known also to oceur in the Skagerack and North Sea; 
though we were chiefly acquainted with it from the collections of the 
Arctic Fxpeditions off Spitsbergen, Bear Island or Northernmost 
Norway. But there was no one who had the faintest idea some 
ten years ago, what an abundance of this species the Norwegian 
Fiords really contained: since judging by what was caught by 
dredging implements up to that time the species did not seem 
particularly common. 
By means of a trawl specially constructed for investigating the 
animal-life at the bottom Dr. C. G. Jon. PrTERSEN succeeded in 
the summer of 1898 in catehing large quantities of P. borealis in 
the Gullmar Fiord in Bohuslån; and Dr. J. Hjort in the autumn 
of the same year by means of an implement of similar construction 
proved the existence of equally large quantities in the fiords of 
Brevik and Langesund also. 
Dr. Hsort promptly instituted that very autumn å profitable 
fishery in Brevik and Langesund. Ås a result more and more 
new remunerative grounds were gradually discovered by the fisher- 
men themselves throughout the whole Christiania Fiord: and similar 
diseoveries were made in various other southern fiords and in the 
neighbourhood of Stavanger. The state assisted in these trawling 
experiments, which I was authorised to carry out in 1902,1) and 
gave a special grant for the purpose. 
I have subsequently been enabled by grants from the *Sel- 
skabet for de norske Fiskeriers Fremme” to undertake trawling 
experiments in the fiords outside Bergen as well as northwards 
along the west coast, with the object of ascertaining whether in 
these western fiords also, like in the fiords round Stavanger and 
eastwards towards Christiania, there were to be found sufficiently 
large quantities of Pandalus to justify the institution of a fishery. 
So far as Western Norway was actually concerned, Professor 
G. O. Sars had already by means of å dredge established the fact 
1) Cf. Ræker og Rækefiske”: Aarsberetning vedk. Norges Fiskerier. 
(Bergen 1908). 
