380 NORTH AMERICAN FAUNA 61, FISH AND WILDLIFE SERVICE 



Figure 9. — Common crab, Cancer magister, taken by trawling at a depth of 

 15-20 fathoms. Petersburg-, Alaska, September 17, 1937. 



Figure 10. — King- crab, Paralithodes sp., taken by trawling at a depth of 

 15-20 fathoms. Petersburg, Alaska, September 17, 1937. 



