380 ICIEBID^. 



An egg of the Tricoloured Blackbird resembles those of A. pJice- 

 niceus in colour, markings, and size. 



1. California (Nehrkorn Coll.). Crowley Bequest. 



AgelsBus thilius (Mol.). 

 (Plate XVI. flgs. 16 & 17.) 



Icterus tlxilius, Thien. Fortpjlanz. ges. Vog. tab. xxxvii. fig. 9 (1845-54). 



Agelaeus thiliu?, Scl. Cut. Birds B. M. xi. p. 343 (1886) ; Scl. <§• Hnds. 

 Ai-ff. Orn. i. p. 97 (1888) ; James, New List Chilian Birds, p. 3 

 (J 892) ; Holland, Ibis, 1892, p. 198 ; Nehrk. Kat. JEiersamml. p. 100 

 (1899) ; Iheriny, Rev. Mus. Panlista, iv. p. 220 (1900) ; Sharpe, 

 Hand-l. v. p. 493 (1909); Kehrk. Kat. Mersamml. -p. 343 (1910); 

 C. Grant, Ibis, 1911, p. 105. 



The eggs of. the Yellow-shouldered Marsh-bird are of a narrow 

 OTal shape and moderately glossy. They vary in colour from pale 

 greenish-blue to greyish-piuk, spotted and blotched, chiefly at the 

 broad end, with black, deep reddish-brown or dark purplish- 

 brown. Some of the markings take the form of short, broad lines, 

 and these, when they occur, generally form an irregular wreath or 

 zone round the broad end. At this part also there are often some 

 smears and spots of pale lavender. Specimens measure from '8 to 

 1 in length, and from '6 to -7 in breadth. 



1. Chile. Crowley Bequest. 



2. Chile. Crowley Bequest. 



1. Chile. _ E. C. Reed, Esq. [P.]. 



2. Santiago, Chile, 3rd Nov. {Banc ; Crowlej' Bequest. 



Tristram Coll.). 



3. Central Chile (Landbeck). Berkeley James Coll. 

 3. Central Chile (Landbeck). Berkeley James Coll. 

 3. Central Chile (Landbeckl. Berkeley James Coll. 

 3. Central Chile (Landbeck). Berkeley James Coll. 



5. Argentine Republic, Oct. A. H. Holland, Esq. [C.]. 



3. Ajd, Buenos Ayres, 8th Dec. Miss I. G. Ruimacles [C.J. 



AgelaBus flavus (Gmel). 



(Plate XVII. figs. 1 & 2.) 



Icterus flavus, Thien. Fortpjlanz. ges. Vog, tab. xxxvii. fig. 16 (1845-64). 

 Agelasus flavus, iScl. Cat. Birds B. Ttf.'xi. p. 346 (1886); Sd. ^ Huds. 



Arg. Orn. i. p. 98 (1888); Holland, Ibis, 1896, p. 315; Nehrk. 



Kat. E ersamml. p. 100 (1899); Ihering, Bev. Mus. PauHsta, iv. 



p. 221 (1900) ; Sharpe, Hand-l. v. p. 494 (1009) ; Ne?ir!c. Kat. Eier- 



samml. p. 343 (1910). 

 Xanthostomus flavus, Gibson, Ibis, 1885, p. 278. 



The eggs of the Yellow-headed Marsh-bird are of a rather broad 

 oval form and moderately glossy. They are very pale greenish- 

 blue, speckled and blotched with pale chestnut-brown and lilac- 



