I. The Distribution of M. glaciale 
in Northern Waters. 
When Collett published his last notes (1903 p. 114) on 
Norwegian fishes only 5 specimens of Myctophum glaciale were 
known to him, the first one dating as far back as 1774. Since 
1903 some more specimens have ‘been recorded (Grieg 19i2, 
Nordgaard 1917) but on the whole the species was considered 
a rare visitor in northern waters. On a short cruise with the 
“Armauer Hansen” in May 1914 from the mouth of the Sogne- 
fjord out in the Norwegian Sea horizontal hauls, towing several 
appliances simultaneously on the same wire, were carried out at 
4 stations. The stations were situated off the slope from the 
North Sea plateau down to the Norwegian Sea (between 62° I'N. 
and 63° 2’ N., and between 0°8’W. and 2° 41' W). Nine spe- 
cimens of M. glaciale in all were caught on three of these stations, 
each time in one gear only; on the fourth station the fishing 
had to be concluded within a short time owing to stormy weather. 
In the previous year the same method of fishing had been used 
during a cruise of the “Armauer Hansen” in the North Atlantic 
(abt. 57° N). Having taken part in both cruises my attention 
was drawn to the fact that M. glaciale was proportionately quite 
as numerously represented in the catches off the Norwegian coast 
as from the North Atlantic, a number of young fish from the 
last-named expedition not being taken into consideration. These 
facts together with occasional captures by means of a trawl in some 
of the fjords of Western Norway suggested that M. glaciale might 
prove a more common species in these waters than generally 
supposed. Among the Myctophum-species M. glaciale has, next to 
M. arcticum, the most northern range in the Atlantic, not reaching 
farther south than abt. 35° N. on the western side and abt. 40°N. 
on the eastern side of this ocean, and inhabits the layers between 
