LARUS. 215 



ground being of an olive-buff colour and the markings being pretty- 

 evenly distributed over the egg. They vary from 2'55 to 3*1 iu 

 length, and from 1-75 to 2 ia breadth. 



2. R. Petchora, lat. 67i^X., 19th June Seebohm Coll. 

 (H. Seebohm ^' J. A. Harcie- 

 Bwton). 



1. R. Petchora, lat. 68^ X., 26th Juue Seebohm Coll. 



(H. S.&rJ. A.II.-B.). 

 8. Yenesei Valley, lat. 70i^ N., 7th Seebohm Coll. 



July (H. Seebukm). 

 1m. Yeuesei Valley, lat. 71.',^ N., 10th Seebohm Coll. 

 July {II. <S'.). 



Larus occidentalis, Auduh. 



Larus occidentalis, Bnird, Brewer Sf Ridgw. Water Birds N. Am. ii • 

 p. 230 (1884) ; Saunders, Cat. Birds B. M. xxv. p. 257 (1896) 5 

 Sharpe, Ha>ul-l. i. p. 141 (1899). 



The four eggs of the "Western Gull iu the Collection are abso- 

 lutely indistinguishable from those of L. nffiais and typical eggs of 

 L. fuscus. They measure respectively: 2-50 by 1-9; 2-71 by 1'9 ; 

 2-i) by 1-9 ; 2-83 by 2. 



1. Pyramid Lake, Nevada. Saunders Coll. 



2. Farallones Point, Mexico (//. G ruber : Salvin-Godmau ColL 



Hens haw Coll.). 



1. N. America. Salvin-Godman Coll. 



Larus argentatus, Gm. 



Larus argentatus, Thien. Fortjrflanz.yes. Vof/. tab. xic. fig. 4,a-i (1845—54) ; 

 Ilncitson, Eqijs of Brit. Birds, ii. p. 499, pi. cxl. (1856); Dresse-, 

 Birds Eur. viii. p. 399 (1873) ; Baird, Brewer Sf Ridqw. Water 

 Birds N. Am. ii. ip. 235 (1884); Seebohm, Brit. Birds, iii. p. 32(i, 

 pi. 51 (1885) ; id. Eggs of Brit. Birds, p. 110, pi. 33. figs. 1, 2 (1896) ; 

 Saunders, Cat. Birds B. M. xxv. p. 260 (1896) ; Sharpe, Hand-l. i. 

 p. 141 (1899). 



Laroides argentatus, Baedeker, Eier Eur. Vog. tab. 40. fig. 1 (1855-63). 



The eggs of the Herring Gull present nearly all the types of 

 coloration to be found among the eggs of L. fuscus, but they are, 

 as a body, rather larger. They measure from 2'55 to 3 in length, 

 and from 1"75 to 2*1 in breadth. 



2. N. America {Smrf.hs. Inst.). Salvin-Godman Coll. 



2. llMda-orLs Ba,y {C. Bre.cler: Henshaiv Salvin-Godmau Coll. 



Coll.). 



1. Selkirk Settlement (D. Gunn: Salvin-Godman Coll. 



Hvnshaw ColL). 



I. Massachusetts (T. M. Brewer). Salvin-Godman Coll. 



13. Copinsha, Orkneys [Hargift Coll.), Seebohm Cell. 



3. Sallee Islands, Ireland, 27th May Seebohin Coll. 

 .'i. Breachv, Donegal, 14th ^lav. Saunders Coll. 

 i<. Farn Islands, June (//. Seebohm). Seebohm Coll. 

 1. Farn Islands (-H. Seebohm). Seebohm Coll. 



