BIRDS LARIDAE LARUS CIIALCOPTERUS. 
843 
Journal fur Ornith. Juli, 1855, p. 281, applies so well to the adult specimens before me, that I 
have no doubt of their being the same. His account, in which no measurements are given, is 
very concise and is as follows : 
"Resembling L. glaucus altogether, with the exception of the wing feathers, which in this 
species are ashy gray with round white spots on the points." 
He puts L. glaucopterus, Kittlitz, as a synonym, but gives no references where to find the 
descriptions of either author. 
The omission to make references to the original descriptions of species prevails throughout 
Dr. Bruch's very valuable monograph ; it would have added much to its usefulness if this had 
been done when citing authorities. 
List of specimens. 
Catal. 
No. 
Sex. 
Locality. 
When 
collected. 
Whence ob- 
tained. 
Orig 
No. 
Collected by— 
Length. 
Wing. 
Remarks. 
6462 
4527 
6452 
6457 
6453 
6458 
6461 
6460 
O 
O 
o 
9 
o 
Feb. 4, 1856 
215 
559 
154 
67 
Dr. Suckley.. 
25.00 
26.00 
23.00 
24.00 
26.00 
24.50 
54.00 
17.25 
17.50 
15.75 
Washington Territory. 
Fort Steilacoom, W. T. 
Dr. Suckley .. 
....do 
Dec. 26, 1856 
Dec. 20, 1850 
Oct. 13, 1854 
May 3, 1852 
Mar. 1854 
Dec.—, 1854 
Gov. Stevens.. 
52.00 
58.00 
51.50 
15.50 
17.00 
15.50 
Shoalwater Bay, W. T. . 
do 
do 
Dr. Cooper . . 
Iris grayish yellow ; bill blue; 
feet flesh color. 
Iris white ; bill yellow and 
red. 
Iris dark brown ; bill and feet 
gray. 
do..,..,.. 
Lt. Trowbridge. 
....do 
T. A. Szabo.. 
22.50 
27.75 
52.00 
15.00 
lfi c ,0 
LAEUS LEUCOPTEEUS, Faber. 
The White-winged Gull. 
Larus leucopterus, Faber, Prodr. Is]. Orn. 1820, 91.— Bonap. Syn. 1828, No. 301.— Rich. & Sw. F. B. A. II, 1831, 
418.— Nutt. Man. II, 1834, 305.— Aud. Birds Amer. VII, 1844, 159 ; pi. ccccxlvii. 
Laroides leucopterus, Brucii, Cab. Journ. 1855, 281. 
Leucus leucopterus, Bon. Cons. Av. II, 1856, 217. 
" Larus islandicus, Edmonston." 
Larus glaucoides, Temm. 
Sp. Ch. — Mult. Back and wings pale bluish gray ; the terminal part of the quills and their shafts, as well as the rest of the 
plumage pure white ; bill bright yellow, with an orange red spot on the lower mandible towards the end ; legs and feet pale flesh 
color. 
Length, 26 inches ; wing, 17 1 ; tail, 61 ; bill about 2 ; tarsi, 2^. 
Hah — Arctic seas, Baffin's Bay, Labrador. 
LAEUS CHALCOPTEEUS, Lawrence. 
The Gray-winged Gull. 
" Laroides chalcoplerus, Licht." Britch, Rev. Lar. in Cab. Jour. 1855, 282. 
Leucus chalcoplerus, Bon. Cons. Av. II, 1856, 216. 
The only notice of this species I have met with is in Bruch's Monograph of Gulls, referred to 
above ; his description is as follows : 
" Besembles very much L. leucopterus, except in the wing feathers, which are ash gray with 
round white spotted points ; the young are dark gray like L. glaucopterus.'" 
Hah. — "American coast of Behring's Straits and Greenland." 
