682 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Adult male.—Wing, 349-374 (361.9); tail, 172-243 (207.9) %5 
exposed culmen, 38-43.5 (40.4); tarsus, 48-54 (52); middle toe, 
42-47 (44.6).° . 
Adult female.—Wing, 351-370 (359.7); tail, 128-205.5 * (181.2); 
exposed culmen, 38-44 (40.2); tarsus, 50-55 (52.1); middle toe, 
42-48 (46.1).° 
Breeding on western coast of Greenland (from lat. 64° N. to 
Upernavik, lat. 73° N.), North Somerset Island (Fury Point), coast 
of Mackenzie (Cape Lisburne; Cape Bathurst; Franklin Bay; 
mouth of Anderson River), Melville: Peninsula (Igloolik), Baffin 
Land (Exeter Sound), and northern coast of Alaska (Point Barrow; 
Cape Lisburne)—probably also on Melville Island—also in Arctic 
districts of Eastern Hemisphere (Novaya Zemlya; Kanin Peninsula; 
Yenesei River; Golchika), as far northward as lat. 83°, north of 
Spitzbergen; recorded also, but not as breeding, from Melville Island, 
Whalefish Islands, Spitzbergen, Jan Mayen Land, Lutke Land, Great 
Liakoff Island, Aleutian and Pribilof Islands, Bering Strait, Hudson 
Strait, and many other Arctic localities; migrates southward as far as 
Galapagos Archipelago (off North Albemarle Island, Dec. 15, 1897), 
coast of Peru (Callao Bay, Dec., Nov. 17, 1883), Madeira, Atlantic 
coast of southern Africa (Walvisch Bay), coast of Burma, and 
northern Australia. ¢ 
@ Measurements of the tail are of the middle pair of rectrices, which vary greatly 
in their development. 
> Ten specimens, 
¢ Nine specimens, 
Ex- 
Locality. Wing. | Tail. pou Tarsus. — 
men. 
MALES, 
Eight adult males from northern Atlantic coast of North 
AIM OPIGA. 2.c0s cw save ees saciaae see eRttane Meese cekmeveee 206.1] 40.1] 50.2 44.6 
Two adult males from Alaska 215 40. 2 52.2 44,5 
FEMALES, 
Eight adult females from northern Atlantic coast of North 5 
ASST CE ea a oi fap Sich spare cians ators, clarsraicsngars Sfacaietois cision leases amined 3584] 181.5 40 52 45.8 
One adult female from Alaska. .............002 eee e ence eeeneee 370 179 41.5 52.5 48 
@ Records in United States are, in part, as follows: 
Magsachusetts: Near Lynn, July 5, 1889. 
Rhode Island: Block Island, Oct. 11, 1895. 
New York: Little and Great Gull islands, Aug. 6-16, 1888, common; Ossining, 
Oct. 18, 1877; Montauk, Oct. 30, 1889. 
New Jersey: Long Beach, Dec., 1876; Andalusia. 
Pennsylvania: Peach Bottom, Lancaster County, July 11, 1869. 
