15. LARUS. -87 



terminally, -while the primaries are fairly ash-grey, with a distinct 

 mirror on the outermost primary and a visible pattern on the rest ; 

 tail still mottled with prey, but paler. 



ilah. Both sides of Bering Sea, but very little to the north of the 

 Straits and not at Point Barrow ; the Aleutian chain of islands, the 

 Commander Is. and Kamtschatka, and the American coast to the 

 Straits of San Juan de Fuca (breeding) ; in winter to Southern 

 California, and to Northern Japan. 



a. Juv. sk. 



b. 5 imm. sk. 



c. (S ad. sk. 



d. Ad. St. 



e. Juv. sk. 



/. 6 ad. sk. 



g,h- 6 2 vixad. 



sk. 

 i. (S juv. sk. 

 k. 5 imm. sk. 



I. Imm. sk. 



«i. $ juv. sk. 



n, 0. S ] uv. ; p, 

 q. 2 juv. sk. 



r. (S ad. ; s. 

 Imm. sk. 



St. Michaer.s, Alaska, Oct. {E. 



W. Neho?i). 

 Ounalaska Island, Alaska, May 



(K IV. A'.). 

 Kadiak Island, Alaska ( W. J. 



Fis/ier). 

 Vancouver Island. 

 Vancouver Island [about 



August]. 

 Vancouver Island, March {J. 



Hepburn). 

 Vancouver Island, Feb.-March 



(A. Forrer). 

 Vancouver Island, April {A.F.). 

 Whidbv Island, W. Terr., Jan. 



{F. Stephens). 

 Olympia, W. Terr., Dec. {Hen- 



shaw Coll.). 

 Farallones, San Francisco Bay, 



C'ala., April {Hepburn). 

 Ventura, Cala.,Nov. (Hennhaw). 



Ilakodadi, Japan {Capt. Blakis- 



tOJl). 



41. Larus nelsoni. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Dr. Lvall, R.N. [P.]. 

 J. K. Lord, Esq. [P.]. 



II. Saunders Coll. 



II. Saunders Coll. 



II. Saunders Coll. 

 Salvin-Godman Coll. 



Salvin-Godman Coll. 



H. Saunders Coll. 



Salvin-Godman Coll. 



Seebohm Coll. 



[?] Laroides chalcopterus, BrucJi (? Lichf.), J. f. O. 1855, p. 282 



("Bering Str. and Greenland"). 

 Leucus chalcopterus, Bp. (? Licht.) C. R. xlii. p. 770 (185G) ; id. 



Coii.fp. Ai: ii. p. 216 (1857 : " Bering Str. and Greenland ") *. 

 Laius glaucescens, Grai/, Uand-l. B. iii. p. 113 (1871 : as regards 



Kellett and Wood's bird). 

 Larus nelsoni, Henshmr, Auk, 1884, p. 250 (St. Michael's, Alaska) ; 



Baird, Breicei; ^- Ridyiv. Water-B. N. Amer. ii. p. 222 (1884) ; 



A. 0. U. Check-l. N. Amer. B. p. 88 (1880); Ridgw. Man. N. 



Amer. B. p. 27 (1887) ; Heushaw, in Xehon's Rep. N. H. Alaska, 



Birds, V- 53 (1887 : Pt. Barrow, juv. ?). 

 ? Larus kumlieni, Murdoch, E.iped. Pt. Barrow, p. 123 (1885 : 



juv.). 



* Bouaparte's description {Consp. Av.) seems to suit L. nelsoni, but the 

 second locality must refer to L. kumlieni (infra, p. 288). When I examined 

 the supposed tvpe of Lichtenstein's L. chalcopterus in the Berlin lluseiiin, 

 in 1877, 1 took it to bei. leucopfcrus, but it is possible that the taint grey mark- 

 ings on the primaries may have escjiped my notice in a bad light, especially 

 if the quills were worn and abraded. 



