380 ICTERID 3. 
An egg of the Tricoloured Blackbird resembles those of A. pha- 
niceus in colour, markings, and size. 
1. California (Nehrkorn Coll). Crowley Bequest. 
Ageizus thilius (1ol.). 
(Plate XVI. figs. 16 & 17.) 
Tcterus thilius, Thien. Fortpflanz. ges. Voq. tab. xxxvii. fig. 9 (1845-54). 
Ageleus thilius, Sel. Cut. Birds B. M. xi. p. 343 (1 886) ; Sel. & Hus 
Arg. Orn: i p. Vi IeeS) ae New List Chilian Birds, p, 8 
(1892) ; Holland, Ibis, 1892, p. 198; Nehrk. Kat. Eiersanind. p. 100 
(1899); Lhering, eee Mus. Padsca: iv. p. 220 (1900) ; Sharpe, 
Hand-l. v. p. 493 (1909); Nehrk. Kat. Eversamml. p. 343 (1910) ; 
C. Grant, Ibis, 1911, p. 105. 
The eggs of the Yellow-shouldered Marsh-bird are of a narrow 
oval shape and moderately glossy. They vary in colour from pale 
ereenish-blue to greyish-pink, spotted and }lotched, 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 on 8 to 
1 in length, and from °6 to -7 in breadth. 
1. Chile. Crowley Bequest. 
2. Chile. Crowley Bequest. 
1. Chile. I. C. Reed, Esq. [P.]. 
2, Santiago, Chile, 3rd Nov. (Dane: Crowley Bequest. 
Tristram Coll.). 
8. Central Chile (Landbeck). Berkeley James Coll. 
3. Central Chile (Landbeck), Berkeley James Coll. 
8. Central Chile (Landbeck). Berkeley James Coll. 
3. Central Chile (Landbeck). 3erkeley James Coll. 
5. Argentine Republic, Oct. A. H. Holland, Esq. [C.}. 
3. Aj6, Buenos Ayres, 8th Dec. Miss L. G. Rurnacles con 
Ageleus flavus (Gmel.). 
(Plate XVII. figs. 1 & 2.) 
Teterus flavus, Thien. Fortpflanz. ges. Vog. tab. xxxvii. fig. 16 (1845-54). 
Aveleus flavus, Sel. Cat. Birds b. M. xi. p. 846 (1886); Scl. §& Huds. 
Arg. Orn. i. p. 98 (1888); Holland, Ibis, 1896, p. 315; Nehrk. 
Kat. E ersummil. p. 100 (1899); Ihering, Rev. Mus. Paulista, iv. 
p- 221 (1900); Sharpe, Hand-l. v. p. 494 (1909) ; Nehrk. Kat. Evier- 
samml. p. 348 (1910). 
Xanthostomus flavus, Gibson, Ibis, 1885, p. 278. 
The eggs of the Ycllow-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- 

