Opisthomi and Anacanthini 743 
swims near the bottom. The wall-eyed pollack (Theragra 
jucensis) is found about Puget Sound. Smaller codfishes of 
this type are the wachna cod (Eleginus navaga) of Siberia and 
the Arctic codling (Boreogadus saida), both common about Kam- 
chatka, the latter crossing to Greenland. 
Several dwarf codfishes having, like the true cod, three dor- 
sal fins and a barbel at the chin are also recorded. Among 
these are the tomcod, or frostfish, of the Atlantic (Microgadus 
tomcod), the California tomcod (Microgadus proximus), and 
Micromesistius poutassou of the Mediterranean. These little 
cods are valued as pan fishes, but the flesh is soft and without 
much flavor. 
Other cod-like fishes have but two dorsals and one anal fin. 
Many of these occur in deep water. Among those living near 
shore, and therefore having economic value, we may mention a 
few of the more prominent. The codlings (Urophycis) are repre- 
sented by numerous species on both shores of the Atlantic. 
Fie. 656.—Tomcod, Microgadus tomcod (Walbaum). Woods Hole, Mass. 
Urophycis blennoides is common in the Mediterranean. Uro- 
phycis regius, on our South Atlantic coast, is said to exhibit 
electric powers in life, a statement that needs verification. 
In the Gulf of Mexico Urophycis floridanus is common. Far- 
ther north are the more important species Urophycis tenuts, 
called the white hake, and Urophycis chuss, the squirrel-hake. 
The ling (Molva molva) is found in deep water about the North 
Sea. 
A related genus, Lota, the burbot, called also ling and, in 
America, the lawyer, is found in fresh waters This genus con- 
