418 



THE FUR SEALS OP THE PRIBILOF ISLANDS. 



Average measurements of A. morinella and A. interpres. 



Tarsus. 



20 Virginia spring males : 



Average 



Largest 



Smallest 



11 Virginia spring females : 



Average 



Largest , 



Smallest 



10 Pribilof autumn males : ^ 



Average 



Largest 



Smallest 



5 Pribilof autumn females : i 



Average 



Largest 



Snialleat .'• 



6 Japanese spring males, average 



2 Japanese spring females, average 



2 Bering Island males, ' average 



3 Alaskan summer males, ' average 



3 Alasltan summer females, ' average 



5 European females,' average 



3 European males, ' average 



1 Greenland female i 



1 Greenland male ' 



Breeding males, as given in British, Museum Catalogue . , . 

 Breeding females, as given in British Museum Catalogue. 



L02 

 L05 

 .96 



1.02 



1.05 

 .99 



1.02 



1.04 

 l.Oli 



1.02 

 1.04 

 .98 

 1.02 

 1.05 

 1.02 

 i.o;i 



1.06 



1.02 



1.00 



1.04 



.99 



.95 



.95 



' Worn wings and tails, summer or fall birds. 



Order EAPTORBS. Birds of Prey. 



Three hawks and two owls are known from the islands, but several others possibly 

 occur. The limited area doubtless prevents undue increase in individuals of raptorial 

 species, though the great abundance of other birds during the summer, at least, would 

 naturally lead us to expect the reverse. Hawks and owls are rarely seen, but oftener 

 on St. George than on St, Paul, because of the presence there of numerous lemmings. 



Family FALCONIDAE. Falcons, Ha-wks, Eagles, etc. 



55. Haliaeetus lencocephalus alascensis Townsend. Cliff Eagle. 



Haliaeetus leucoceiilialiis, Sharpk, Cat. B. Br. Mus. I, 1874, 304.— CoUBS, Key, 1890, 555.— A. 0. 

 U. Ch. List, 1895, 136.— Eidgway, Man. 1896, 243 (all part). 



I took with me to St. Paul a spiecimen that I had shot at Unalaska, and it was 

 immediately recognized by many of the natives as being occasionally seen about the 

 islands. Usually abundant on the cliffs about Unalaska, especially in severe weather. 



56. Falco irusticolus gyrfalco (Linn.). Gyrfaloon. 



Falco sacer, Coues, in Elliott's Rpt. Afif. Alaska, 1873; Reprint, 1875, 179; Key, 1890, 532.— 



Eluott, Mon. Seal Ids, 1882, 128. 

 Sierofaloo gyrfalco, Sharpe, Cat. B. Br. Mus. I, 1874, 416 (part). 

 Sierofaleo gyrfalco sacer, Bean, Proc. U.S.N.M., 1882, 161. 

 Falco rusticolus gyrfalco. Nelson, Bds. Alaska, 1887, 146.— A. O. U. Ch. List, 1895, 137.— Eidg- 



wav, Man. 1896, 246. 



Mr. Elliott collected a specimen, the only one he saw. Dr. T. H. Bean collected 

 one that \ras trying to alight on the vessel while 60 miles east- southeast of St. George. 

 No. 64296, im. o., March, 1873, St. Paul, H. W. E. No. 81398, 9 , September 24, 1880, 

 off St. George, T. H. B. (Length, 21.00; extent, 44.00; wing, 14.00; tail, 9.00: tarsus, 

 2.37, Dr. T. H. B.). 



