594 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
four outer primaries with the outer web brownish gray subterminally, 
this sometimes confluent with the band on inner web but sometimes 
separated from the subterminal band by a white area; inner webs 
of primaries pure white (except for the subterminal brownish-gray 
band, when present), passing into delicate pale gray basally, the 
outermost sometimes with a narrow subterminal stripe of gray on 
inner web along shaft; bill yellow, the mandible with a lateral sub- 
terminal spot of red; iris cream color;* naked orbital ring reddish 
purple; legs and feet flesh color. ¢ 
Young.—General color .brownish gray or grayish brown, this 
nearly uniform on under parts, the upper parts mottled with dull white 
and indistinctly mottled and irregularly barred with darker gray, 
the head and neck paler and very indistinctly streaked; primaries 
deep brownish gray, darker on outer webs; tail nearly uniform 
brownish gray, finely mottled basally and on outermost rectrices 
with whitish, the tail-coverts brownish gray or grayish brown more 
coarsely mottled or blotched with whitish; bill blackish, paler (flesh 
color in life?) basally; iris gray; legs and feet dull flesh color (in 
life). : 
Adult male.—Wing, 416; tail, 166; exposed culmen, 47; tarsus, 
56; middle toe, 52.5.2 
Adult female.—Wing, 393; tail, 161; exposed culmen, 43; tarsus, 
53; middle toe, 49.5.° 
Breeding from Cumberland Sound to Ruprecht Island, on eastern 
side of Ellesmere Land, in Lat. 79° N.; migrating southward to 
Nova Scotia (Bay of Fundy, about November 1, 1881); New Bruns- 
wick (Grand Menan, about January 21, 1883), Prince Edward 
Island (October 7, 1905), Quebec (Tadousac, probably spring of 
1901), and New York (mouth of Mohawk River, January 28, 1884; 
Rockaway Beach, Long Island, March 8, 1898). f 
(?) [Larus (Laroides)] chalcopterus (not Larus chalcopterus Lichtenstein, 1854) 
Bruca, Journ. fiir Orn., 1855, 282, part (Greenland). 
(?) [Lewcus] chalcopterus Bonaparte, Compt. Rend., xlii, 1856, 770, part (Green- 
land); Consp. Av., ii, 1857, 216, part (Greenland). 
(?) Larus chalcopterus REINHARDT, Ibis, 1861, 17 (Greenland). 
Larus glaucescens (not of Naumann, 1840) Kumuren, Bull. U. 8. Nat. Mus., no, 
15, 1879, 98 (Cumberland Sound; Baffin Land).—Brewster, Bull. Nutt. 
Orn. Club, viii, 1883, 125 (Bay of Fundy, Nov. 1, 1881).—Merrimt, Bull. 
Nutt. Orn. Club, viii, 1883, 125 (Grand Menan, New Brunswick, Jan., 1883). 
(?) Larus leucopterus (not of Faber, 1822) Banas, Bull. Nutt. Orn. Club, 
vi, 1881, 121 (off Boston, Massachusetts)—Cory, Bull. Nutt. Or. 
Club, vii, 1882, 60 (near Boston).—Brewsrer, Bull. Nutt. Orn. Club, viii, 
1883, 125 (West Sullivan, Maine, Jan., 1883), 
Larus leucopterus (or kumlieni) Braisuin, Auk, xvi, 1899, 190 (Rockaway 
Beach, Long Island, March 8, 1898). 
@ In life, according to Kumlien. " ¢ One specimen. 
> One specimen (type of the species). 
