oc 7- 
f 
/ 6~7 
2 
©. • Subopercle and post clavicle normal, bone dense 
and smooth, like ivory.--Theragra. 
2 
2. . Lower jaw included; barbel well developed; caudal 
not concave behind. 
\ 
£, . Transverse extensions of vertebrae thickened, 
swollen and ivory-like at tip; size small—- 
___ Eleginus. 
i, . Transverse extensions of vertebrae not 
4 
swollen at tip; si 20 large• Gadus# 
b 2 . Anal continuous single fin.-----Tr ipter ophycis. 
a 2 . Anal forming continuous fin or sometimes only deeply 
notched; dorsal usually divided into but 2 fins. 
Ja. Dorsal fins 2. 
1 
h . First dorsal with distinct rays, like those 
those of second dorsal. 
.1 
i . Ventral rather broad, rays 6. 
.1 
*L . Morinae. Anal single, but with deep 
notch; mouth inferior or 
subinferior. 
. Snout little depressed or project¬ 
ing; edge without keel; tail 
slender. 
JL • Ventral rays 5 to 8, subequal. 
short. 
