164 
SCANDINAVIAN FISHES. 
R. hr. 6; D. 7 — 9|12 — 14; A. 10—12; P. 18—21; 
V. - — — ; C. #+8 1. 9+ A’; L. lat. por. 24 — 28. 
Syn. Cottus uncinatus , Reini-i., Dansk. Vid. Selsk. Naturv. Math. Afh., 
Deel 6 (1837), Overs, p. LIIII; ibid. Deel 7 (1838), pp. 
114 et 118; Kb., (. Icelus ) Naturh. Tidskr. Kbhvn, 2:den 
Raekke, Bd. 1, p. 263; Esm., ( Centridermichthys ) Fork. 
Skand. Naturf. M. Christiania 1868, p. 517; Coll., Forh., 
Vid. Selsk. Christiania 1874, Tilleegsh., p. 31; ibid. 1879, 
No. 1, p. 14; Id., Norsk. Nordli.-Exp Zool., Fiske, p. 29, 
tab. I, fig. 7; N. Mag. Naturv., Bd. 29, Heft. 1, p. 54; 
Ltkn, Vid. Meddel. Naturh. For. Kbhvn 1876, p. 379; Lillj., 
Sv., Norg. Fiskar , vol. I, p. 161; Jobd., Gilb., ( Icelus ) 
Bui]. U. S. Nat. Mus.. No. 16, p. 693. 
Centridermichthys uncinatus is one of the small, 
though not of the smallest, Cottoids. On the coast of 
Greenland, according to Lutken, it attains a length of 
100 mm. The size is said by Jordan and Gilbert to 
be the same on the east coast of North America, where 
it occurs as far south as Cape Cod. The largest of the 
specimens taken by the Vega Expedition are only 
slightly smaller, being about 92 mm. in length. These 
specimens were found in different parts of the Arctic 
Ocean off Siberia, from Taimyr Sound to the winter- 
quarters of the expedition near Behring Strait: they 
were taken at spots where the bottom was sandy or 
stony, and most often among seaweeds, at a depth of 
from 5 to 13 fathoms. The species was first described 
from specimens found in Greenland. On the coast of 
Norway it was first, found by G. 0. Sails in 1865, near 
Lofoden, and by Esmark in 1866, off Hammerfest. It 
was taken off Nova Zembla by Heijglin in 1871. It 
has subsequently been caught at various spots along 
the whole coast of Norway, as far south as the Whale 
Islands, on the Swedish frontier; but in its southern 
haunts, like other arctic forms, it lives at greater depths. 
Even in its true habitat, the Arctic Ocean, it was 
taken by the Norwegian Arctic Expedition at a depth 
of 223 fathoms, south-east of Bear Island. Singularly 
enough it has not yet been met with on the coasts of 
Spitzbergen or of Iceland. 
Its food, like that of the preceding species, is 
composed of worms and crustaceans. 
