Ichthyologiske notiser I. 71 
oblivia; this crustacean was taken in abundance in the same net 
as the fish and in other pelagic appliances. 
Sex. Female with large eggs. 
Habits. The species is generally believed to be restricted 
to the cold abyss of the Norwegian Sea, being taken only when 
trawling at depths between 1000 and 2000 metres. Besides 
the specimen here considered, previously only one specimen has 
been taken pelagic in the Norwegian Sea. (HJORT 1912, fig. 107, 
p. 137). That the species generally is of bathypelagic habit 
seems, however, to be contradicted by the fact that on the 
«Michael Sars” stat. 102, *s 1902 24 specimens were caught 
during one trawling operation (COLLETT 1905 b., p. 104; HJORT 
(1905 II p. 101) gives the total at 34 specimens). If the specimens 
were taken when the trawl was passing the intermediate water- 
layers only an abundant occurrence can explain this rich catch’). 
The specimens were partly mature, partly spent according to 
COLLETT. When we therefore assume that the species is living 
in snoals at spawning-time, this may explain the said rich 
collection by means of trawl. As before mentioned it may be 
deduced from the appearance of the mature ovaries of Paraliparis 
that the fertilization is secured in some way or other. 
In favour of pelagic habits the fact suggests that the food 
of COLLETT’s specimens consisted of the same crustacean as I 
found in my specimen, viz. Parathemisto oblivia, which, as far 
as I know, is a pelagic or bathypelagic species. 
Nothing is known of the eggs and young stages of this 
Paraliparis, whether they are bathypelagic or not. From the 
North Pacific and the Bering Sea some other species of Paraliparis 
are described, all from specimens collected by trawl. From the 
Bering Sea is, however, also described a closely allied genus of 
pelagic habits; as this in my opinion most probably represents 
only the young stage of a Paraliparis, | shall discuss it here. 
Nectoliparis pelagicus (Gilbert & Burke). This new genus 
and species was established by GILBERT & BURKE (1912, 
”). During the setting out and hauling in of a trawl sometimes a 
stoppage may occur, the trawl then fishing horizontally as a pelagic appliance. 
I have not had opportunity to settle this question by seeing the original 
journal of this cruise. 
