302 ICTERIDE. 
Genus XANTHOCEPHALUS, Bonap. 
Xanthocephalus xanthocephalus (Donap.). 
Xanthocephalus icterocephalus, Baird, Brewer § Ridgw. (nee Linn.) 
N. Amer. Birds, ii. p. 167 (1874). 
Xanthocephalus longipes, Sel. Cat. Birds B. M. xi. p. 350 (1886) ; Salv. 
& Godm. Biol. Centr.-Amer., Aves, i. p. 455 (1887); Nehrk. Kat. 
Iversamml. p. 100 (1899). 
Xanthocephalus yanthocephalus, Bendire, Life-Hist. N. Amer. Birds, ii. 
p- 446, pl. vi. figs. 10-12 (1895); Ridgw. Birds North §& Mnradle 
Amer. ii. p. 847 (1902); Sharpe, Hand-l. vy. p 495 (1909) ; Nehrk. 
Kat. Liersamml. p. 843 (1910). 
The eggs of the Yellow-headed Troupial are mostly of an 
elongate oval shape and fairly glossy. ‘They vary from greyish- 
white to greenish-white, and are densely speckled and mottled 
with various shades of brown, grey, and pale rufous. ‘Lhe markings 
are most dense on the broad end of the egg, but seldom form a 
conspicuous cap. Numerous specimens measure from 1 to 1-2 in 
length, and from 7 to *78 in breadth. 

2. North America (Smiths. Inst.). Salvin-Godman Col). 
12. Washoe Lake, Nevada (Hen- Salvin-Godman Coll. 
shaw Coll.), 
9. Minnesota, 2nd June (Henshaw Salvin-Godman Coll. 
Coll.). 
1. Beaver Dam, Wisconsin (7. M. Crowley Bequest. 
Brewer: Tristram Coll.). 
4, Towa, 10th June. Crowley Bequest. 
5. Des Moines, Lowa, 24th May W. Radcliffe Saunders, Esq. 
(J. B. Green). eee 
Genus AMBLYRHAMPHUS, Leach. 
Amblyrhamphus holosericeus (Scop.). 
Amblyrhamphus ruber, Burm. La Plata Reise, ii. p. 491 (1861). 
Amblyrhamphus holosericeus, Sel. Cat. Birds LB. M. xi. p. 851 (1886) ; 
Sel. & Huds. Arg. Orn. i. p. 101 (1888); ILhering, Rev. Mus. 
Paulista, iv. p. 221 (1900); Sharpe, Hand-l. v. p. 495 (1909); 
Nehrk. Kat. Eiersammil. p. 345 (1910); C. Grant, Ibis, 1911, p. 106. 
Eggs of the Scarlet-headed Marsh-bird are of an ordinary oval 
shape and glossy. They closely resemble eggs of the Common 
Song-Thrush, the ground being pale blue, sparingly marked with 
a few small spots and irregular marks of dark purplish-black and 
purplish-grey. They measure respectively: 1°01 by ‘73; 1 by °73; ° 
1 by °72; ‘98 by -74. These eggs agree with the description given 
by Hudson, but not with that given by Burmeister. Nehrkorn 
describes the ground-colour as yellowish-white. 
1. Ajé6, Buenos Ayres, 15th Nov. Crowley Bequest. 
(£. Gibson). 
3. Ajo, 23rd Dec. (C. H. B. Grant). Ernest Gibson, Esq. [ P.). 
