294 



mandible and the portion of the upper mandible irnmediately in 

 front of the nostrils, which are yellow. The female is somewhat 

 lighter in colour than the male. 



Lar us gl aue us, Briinn. 



In West Finmark, no large colony of this species has been 

 found. It breeds sparingly in several localities, on Tamsø, in the 

 Porsanger Fjord, for instance. Visits Tromsø, — and indeed most 

 places at which it occurs, — chiefly in winter-time. 



In September 1871, a gull, pure white, hut of the size of 

 L. glaucuSj was shot at the mouth of the Trondhjemsfjord (64°). At 

 my instigation this specimen was procured from the Trondhjem 

 Academy of Science for the University Museum. 



This individual (a male bird) had been frequenting the neigh- 

 bourhood for several days in close companionship with L. can&s 

 and fuscus, and being exceedingly bold was shot without difficulty. 



Probably this example belongs to the variety of L. ylavcus, 

 which, under various names, has been established as a distinct 

 species, and whose true rank among the gull genus possibly still 

 remains to be fixed. # 



Several specimens of this form, which as early as 1831 was 

 recorded by the name of L. Hutchmsii, have been procured from 

 the arctic regions of America, and are preserved in the Museums 

 of the United States. The following are its synonyms: — 



Lams Hutchinsii, Richardson, Fauna Boreali-Americana, Vol. 

 II, p. 419, (1831). 



(Hanens f/lacialis, Bruch, Journ. f. Ornith. 1853, p. 96, (1853). 



Laroides glaeialis, Bruch, Journ. f. Ornith. 1855, p. 273, (1855). 



Låras areticus, Bonap. Consp. gen. avium, Vol. II, p. SUG, H856). 



Lams Ruichmsu, Coues, Proc. Acad. Philad. 1862, p« 1294, 

 (1862). 



Larus Ilufchinsii, Cassin, Proc. Acad. Nat. Sei. 1862, p. 325, 

 (1862) 



Larus (/laucus, Malmgren, Ofv. Kgl. Vet. Akad. 1 orh. 1864, 

 p. 390 1 (1864). 



1 Truiiblatcd in Journ f. Ornith. 18G. r >, p. 204. 



