80 



U. S. BUREAU OF FISHERIES 



Seal killings on Pribilof Islands in 1931 — Continued 



ST. GEORGE ISLAND 



Hauling ground 



Skins 

 secured 



North and East 



East -- 



North and Staraya Artil 



North 



East 



North and Staraya Artil 



Zapadni 



East 



North and Staraya Artil 



Zapadni 



East - 



North and Staraya Artil 



Zapadni 



East 



North and Staraya Artil . 



Zapadni 



East 



North and Staraya Artil 



Zapadni 



East 



North and Staraya Artil 



Zapadni 



East 



North and Staiaya Artil 



Zapadni 



East - 



North and Staraya Artil 



Zapadni ._ 



East 



North and Staraya Artil. 



Skin from seal that died as a result of reserving operations 



Total 



20 

 51 

 54 

 69 

 59 

 148 

 61 

 90 

 240 

 226 

 304 

 431 

 231 

 308 

 539 

 110 

 337 

 422 

 285 

 813 

 861 

 114 

 766 

 948 

 130 

 365 

 417 

 75 

 624 

 461 

 1 



9,560 



AGE CLASSES 



The age class of a male seal belonging to the Pribilof Islands herd 

 is determined from the length of its body. The classification was 

 derived from the measurements of a large nmnber of pups branded in 

 1912 and killed in subsequent years. The limits of the various age 

 classes are shown in the table following: 



Age classes of male seals, Pribilof Islands 



Ages of seals killed on Pribilof Islands, calendar year 1931 

 [On basis of classification shown in preceding table] 



1 Cows unavoidably and accidentally killed or found dead. 



