610 
SCANDINAVIAN FISHES. 
LYCODES FRIGID LIS. 
Fig. 146. 
Coloration plain, reddish gray-brown. Body in quite full-grown specimens entirely covered with scales forward 
to the head and a little way over the bases of the vertical fins, in younger specimens naked on the middle of 
the belly, on the fins, and on a strip along their bases. Depth of the body at the beginning of the anal fin in 
adult specimens 10 V 2 — 11 % of the length of the body. One ventro-lateral line, continuous and with dense pores; 
one dorso-lateral line, with scattered pores ( both often indistinct). Head depressed ( flattened ) in front; its length 
more than V 2 the distance between the anal fin and the tip of the snout, and in quite full-grown specimens ( more 
than 3 dm. in length) 42 — 47 %, in younger ones 35 — 42 %, of the length of the tail from the beginning of 
the anal fin to the end of the last fin-rays. 
Fig. 146. Lycodes frigidus , from the Norwegian Arctic Expedition. the natural size. 
•The property of the Museum of Christiania University. 
R. br. 6; D. 99—104; A. 85—90; P. 20—21; V. 2 (4?). 
Syn. Lycodes Vahlii, Coll., Forh. Vid. Selsk. Christ. 1878. No. 4. 
p. 11. 
Lycodes frigidus , Id., ibid., No. 14, p. 45; Norsk. Nordh. 
Exped., Fislce, p. 96, tab. Ill, figg. 23 et 24; Lillj., Sv., 
Norg. Fisk., vol. II, p. 19; Gthr, Deep Sea Fish., Challeng. 
Exped., part. LVII, p. 79. 
This species is known almost exclusively from the 
collections of the Norwegian Arctic Expedition and 
Collett’s description of them. It is said to attain a 
length of almost 51 cm. Its principal characteristic 
lies in the coloration, for in other respects it partly 
coincides with Lycodes reticulatus and partly ranks as 
an intermediate form between the latter and Lycodes 
Vahlii. To judge from our knowledge of the other 
species only male specimens, sterile or with the organs 
of generation at rest, have been found. In the other 
forms of this group of the genus the length of the 
head in the males is greater, in the females less, than 
half the distance between the anal tin and the tip of 
the snout. Our knowledge of Lycodes frigidus does 
not, therefore, preclude the possibility that by this 
specific name are designated a number of sterile and 
perhaps hybrid individuals of one or other of the two 
following species. Among the fifteen more or less 
adult individuals described by Collett all the younger 
ones, with the exception of the youngest (118 mm. 
long), are identical, according to the measurements giv- 
en, in their most essential characters with Lycodes 
Vahlii ; but the older specimens (more than 3 dm. long) 
l 
