BIRDS — LARIDAK — LAEUS CI1ALC0PTKRU8. 



843 



Journal i'iir Oniith. Juli, 1S55, p. 281, applies so well to tlie aihilt speciiuens before me, that 1 

 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. glaucu-i altogether, witli 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. 



LARUS LEUCOPTERUS, Faber. 



The White-winged Gall. 



Larus leucopterus, Faber, Prodr. Isl. 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 leucopUnis, BRccn, Cab. Journ. 1855, 281. 

 Leucus Uucopterus, BoK. Cons. Av. II, 1856, 217. 

 " Larus islandicus, Edmonston." 

 Laru3 glaucoidea, Temm. 



Sp. Ch. — ,1dult. Back and wings pale bluish gray ; the terminal part of the quills and their shafts, as well as the rest of the 

 plumase 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| ; tail, 65 ; bill about 2 ; tarsi, 2^. 



Hob — Arctic seas, Baffin's Bay, Labrador. 



LARUS CHALCOPTERUS, Lawrence. 

 The Grar-winsed Gall. 



" Laroides chalcopterus, Light." Bruch, Rev. Lar. in Cab. Jour. 1855, 282. 

 Leucus chalcopterus, Bon. Cons. At. 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 : 



"Resembles 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." 



Hob. — "American coast of Behring's Straits and Greenland." 



