207 



W. E. D. Scott, Esq. [C.]. 



Saunders Coll. 



Larus cirrhocephalus ( F.). 

 (Plato XVI, fig, 5.) 



Lai'us cirrhocephalus, Scl. ■^- Huds. Ardent . Orn. ii. p. 201 (1889) • 

 Holland, Ibis, 1895, p. 210; Saunders, Cat. Birds B. M. xxv p 198 

 (1896) ; Sliarpe, Hand-l. i. p. 140 (1899). 



The eggs of the Grey-capped GuU in the Collection are of a 

 pretty regular oval form, but some are compressed or pointed at the 

 small end. The ground varies from dark cream-colour to olive-buff 

 and there is a decided tinge of green running through the paler 

 specimens. In three-fourths of the examples the markings, which 

 consist of spots, lines, and medium-sized blotches, are evenly distri- 

 buted over the egg ; but in the remainder the markings form a very 

 irregular cap or zone at the large end. The surface-markings are 

 yellowish brown, rufous brown or blackish brown, and the under- 

 lying ones, which are inconspicuous, are very pale purple. The eo-o-s 

 measure from 1-96 to 2-b in length, and from 1-5 to 1-7 in breadth. 



•59. Argentine Republic, Nov. .fe Dec. A. H. Holland, Esq. [P.]. 



Larus maculipennis, Licht. 

 (Plate XVI. fig, 1,) 



Larus maculipennis, Scl. Sf Huds. Arffent. Orn. ii. p. 198 (1899) ; Saunders 

 P. Z. S. 1891, p. 373: Holland, Ibis, 1895, p. 216; Saunders, Cat 

 Birds B. M. xxv. p. 200 (1896J ; Sharpe, Hand-l. i. p. 140 (1899). 



The eggs of the Spot-winged Gull are remarkably varied both 

 with regard to the ground-colour and the disposition of the mark- 

 ings. They are of a regular oval form, sometimes pointed. Three 

 eggs are of a pale unspotted blue colour ; another is blue, sparingly 



