418 



THE FUR SEALS OF THE PRIBILOF ISLANDS. 

 Average measiiretnents of A. mor'mella and A. interpres. 



20 Virginia spring males : 



Average 



Largest 



Smallest 



11 Virginia spring females: 



A\t'rage 



Largest 



Smallest 



10 Pribilof autumn males : ' 



Average 



Largest 



Smallest 



5 Pribilof autumn females: ' 



Average 



r^argest 



Smallest 



G Japanese spring males, average 



2 Japanese spring females, average 



2 Hcring Islaml mail's,' average 



'•i Alaskan summer males,' aver:ige 



ii Alask:in summer females,' avi'rage 



5 Knropean females,' average , 



3 Kuri>|>ean males,' average , 



1 Grcinland female ' 



1 (ireenlaud male ' 



Breeding males, as given in British Museum Catalogue . 

 J5reeding females, as given in British Museum Catalogue 



"Wing. 



6. 

 h. 

 6, 

 (?) 

 6. 



Tail. 



2.40 

 2.47 

 2.45 



2.40 

 2.44 

 2.35 



2.38 

 2.40 

 2.37 



2.47 

 2. «0 

 2. 32 

 2.53 

 2. 47 

 2. 3« 

 2.43 

 2.39 

 2.41 

 2..5! 

 2.56 

 2.50 

 2.30 

 2.45 



Culnien. 



0.90 

 .95 

 .89 



.91 

 .91 

 .91 



.86 

 .85 

 .88 



.91 

 .95 

 .89 

 .86 

 .90 

 .80 

 .84 

 .85 

 .87 

 .86 

 .90 

 .81 

 .90 

 .90 



Tarsus. 



1.02 

 1.05 

 .96 



1.02 



1.05 



.99 



1.02 

 1.04 

 1.03 



1.02 



1.04 



.98 



1.02 



1.05 



1.02 



1.03 



1.06 



1.02 



1.00 



1.04 



.99 



. 95 



.95 



' Worn wings and tails, summer or fall birds. 



Order RAPTORES. Birds of Prey. 



Three liawks and two owls are known from the islands, bnt 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. Hav?ks and owls are rarely seen, bnt oftener 

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



Family FALCONIDAE. Falcons, Hawks, Eagles, etc. 



55. Haliaeetus leucocephalus alascensis Towiisentl. Cliff Eagle. 



HaliavetHS leiicocejihaliis, Shari-k, Cat. 13. Hr. Miis. 1, 1874, 304. — Coue.s, Key, 1890, 555. — A. O. 

 U. Ch. List, 1X95, 130.— Ridgway, Man. 1896, 243 (all part). 



I took with me to St. Paul a specimen 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 rusticolus gyrfalco (Linn.). Gyrfalcon. 



Falco saccr, CouK.s, iu Elliott's Hpt. Aff. Ala.ska, 1873; Reprint, 1875, 179; Key, 1890, 532.— 



EiJ.ioTT, Mod. Seal Ids, 1882, 128. 

 Hierofulco yyrfalco, Siiarpe, Cat. B. Br. Mus. I, 1874, 416 (part). 

 Hierofalco gyrfalco saver, Bean, Proc. U.S.N.M., 1882, 161. 

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



WAY, Man. 1896, 246. 



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

 one that was trying to alight on the vessel while GO miles east-southeast of St. George. 

 No. C4296, im. o., March, 1S73, 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.). 



