536 Opisthomi and Anacanthini 
The Alaska cod, Gadus macrocephalus, is equally abundant 
with the Atlantic species, from which it differs very slightly, 
the air-bladder or sounds being smaller, according to the fisher- 
Fic. 486.—Skull of Haddock, Melanogrammus eglifinus. 
men, and the head being somewhat larger. This species is found 
from Cape Flattery to Hakodate in Japan, and is very abundant 
about the Aleutian Islands and especially in the Okhotsk Sea. 
Gj 
f 
Fie. 487.—Haddock, Melanogrammus eglifinus (L.). Eastport, Me. 
With equal markets it would be as important commercially 
as the Atlantic cod. In the codfish (Gadus) and related genera 
there are three dorsal and two anal fins. In the codfish the 
lateral line is pale and the lower jaw shorter than the upper. 
