1-5, LARUS. 



275 



A year later grey feathers appear on the mantle, the band 

 on the rectrices breaks up, the primaries from the 4th upwards 

 show grey wedges, aud the underparts are white ; but the head 

 continues to be thickly streaked, while the neck and shoulders 

 display bold ashy spots : bill yellow, basaUy. 



Lnmaiure. Head slightly streaked; mantle grey, with a few 

 brown feathers remaining about the bend of the wing; outer primary 

 witli an indication of a white spot; rectrices white, with bold 

 bkickish subterminal spots, the remains of the band. The next year 

 there is a distinct spot on each outermost primary and the tail is 

 nearly pure white, but the under wing-coverts are still mottled 

 with brown. The dark colour on the primaries decreases with age, 

 as in other species, until the mature stage is reached. 



Hah. Mainland of North America; not breeding southward of 

 Nova Scotia on the east side or Utah on the west. In winter on 

 both coasts, down to Mexico ; occasionally in Cuba and once in 

 Bermuda. Chiefly an inland species during the breeding-season, 

 frequenting lakes and marshes. 



rt. Imm. St. Northern Expedition. Sir J. Richardson [P.]. 



(Type of L. zonorhynchus.) 



b. Ad. sk. AttipeUa Bay, Labrador, June H. Saunders Coll. 



(A. LechevaUier). 



c. 2 juv. sk. Godbout, Mouth of St, Law- 



rence, Oct. {N. A. Comeau). 



d. (5 ad. sk. Milford, Connecticut, April 



(Henshaio Coll.). 



e. Ad. sk. Coney Island, New York 



(Marshall), 

 f. S imm. sk. Detroit, Michigan (Mai/nard). 



(/. Ad. sk. Ohio (Marshall), 



h. Juv.sk. Indian River, E. Florida, April 



{Maynard). 

 i. Juv. sk. Cedar Cays, W. Florida, Jan. 



[Maynard). 

 k q. S 2 ad. ; Corpus Christi, Texas, Nov., 



r. Juv.sk. ZAn.-Feh.(F.B.Arnistron(i). 



s. 5 ad. sk. Santa Ana, near Guadalajara, 



West Mexico, N ov. ( W. 



Lloyd), 

 t, u. S 2 ^^- sk. Presidio, West Mexico, Jan.- 



Feb. (A. Forrer). 

 "> w- 6 ? ad. sk. Guavmas, N.W. Mexico, Dec. 



(Gervase Mathetc, H.N.). 

 x-z. (S ? vix ad. ; San Diego, Lower Cahfornia, 



a'. Juv. sk. April (i. Beldiny). 



b', c'. c? ad. et 2 San Diego, Lower California, 



juv. sk. Dec. (Henskaw Coll.). 



d'. 2 juv. sk. Ventura, Cala., Nov. [Henshaxv 



Coll.). 

 e'. Juv. sk. San Francisco Bay (-F. Gruher). 



f. Juv.sk. WashoeLake,Nevada, Aug. 31 



{H. W. Henskaw). 

 g'. Juv. sk. 49th Parallel, Aug. 1874. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



H. Saunders Coll. 



H. Saunders Coll. 

 H. Saunders Coll. 

 H. Saimders Coll. 



H. Saunders Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



H. Saunders Coll. 



Salvin-Godman Coll. 



Sidvin-Godman Coll. 



Salvin-Godman Coll. 



II. Saunders Coll. 

 Salvin-Godman Coll. 



North American 

 Boundary Comm. 

 t2 



