78 Sigurd Johnsen. 
now to be added one spec. from Hjørungfjord and one from 
Ryfylkefjord. 
Trachypterus arcticus (Brinn). Annually one or more 
specimens are found stranded on our coast. From the Denmark- 
strait a sealing vessel brought home a specimen found in July 
1915. The species is hitherto not known from Greenland, but 
according to SÆMUNDSSON (1909 p. 25) specimens have stranded all 
around the coast of Iceland. 
Beryx decadactylus (Cuv. & Val.). Of this species five 
or six specimens are known from Norway. A large individual 
485 mm. total length was caught *%> 1920 at the entrance to 
the Sognefjord. (Measurements on p. 38). It has been remarked 
in some of the northern specimens that the lower lobe of the 
caudal fin was shorter than the upper one. This is so with my 
specimen, the difference being 4 cm. Most likely this is not a 
normal feature. My specimen seems to have got the lobe once 
mutilated and then healed again. The Bg. M. has further from 
the Bay of Biscay a specimen with a normal caudal fin, the lobes 
of equal length. It may be that when this southern species 
visits our coast, where the bottom even at greater depths may 
be stony, the lower lobe’ of the caudal is more liable to be 
injured than in the real home of the species. I may add that 
the fisherman who captured this specimen, wrote that the fish 
was caught in a net set out for codfish at a place with varying 
bottom, the depth being about 130 fathoms. 
Spine-armourment: My Sognefjord-specimen has a pair 
of preorbital spines, measuring 6 and 11 mm. COLLETT (1884) 
has shown that B. borealis, Diiben & Koren (1844) must be 
regarded as a young stage of B. decadactylus. B. borealis 
has three pair of spines on the snout, the præorbital pair consisting 
of a prominent two-branched spine. My specimen of B. decadactylus 
from the Biscayan Bay is only ca. 3 cm. longer than the type 
of B. borealis (now in the Bg. M.). It was then to be anticipated 
that this specimen with regard to the spine-armourment would 
show an intermediate stage between B. borealis and the full- 
grown specimens of B. decadactylus. The spines are, however, 
exceedingly small, the præorbital pair measuring only 1—2 mm; 
