PSEVDOLBISTES. 383 
Genus PSEUDOLEISTES, Scluter. 
Pseudoleistes guirahuro (Vieill.). 
(Plate XVII. figs. 6 & 9.) 
Pseudoleistes guirahuro, Sel. Cat. Birds B. M. xi. p. 852 Sat y Euler, 
Rev. Mus. P aulista, iv. p. 34 (1900) ; Ihering, t. ce. p. 221 (1900) : 
Sharpe, Hand-!. v. p. 495 (1909); Nehrk. Kat. Eier Loe) p- 344 
(1910); Chubb, Ibis, 1910, p. G42. 
Eggs of the Yellow-backed Marsh-bird are of a broad oval shape, 
sometimes almost spheroidal, and distinctly glossy. The ground 
is pinkish-white mottled with pinkish and lilac-grey ; towards the 
larger end the sheil is spotted and blotched with deep chocolate 
and brown-pink or maroon, some of the dark chocolate markings 
taking the form of irregular lines and sometimes partiaily bordering 
the brown-pink blotches. They vary from -9 to 1:08 in length, 
and from -7 to °8 in breadth. 
3. South Brazil. Crowley Bequest. 
2. South Brazil. Crowley Bequest. 
10. Sapucay, Paraguay, 20th Nov. W. Foster, Esq. [C.]. 
2, Sapucay. W. Foster, Esq [C.]. 
Pseudoleistes virescens (V?cill.). 
Pseudoleistes virescens, Sel. Cut. Birds B. M. xi. p. 352 (1886); Sel. § 
Huds. Arg. Orn. i. p. 102 (1883); Holland, Ibis, 1892. p. 199; 
Nehrk. Kat. eee p- LOL (1899), p. 344 (1910) ; Euler, Rev. 
Mus. Paulista, iv. p. 34 (1909) ; Lhering, t.e. p. 221 (1900) ; Sharpe, 
Hand-l. v. p. 496 (1909); C. Grant, This, 1911, p: 07, 
The eggs of the Yellow-breasted Marsh-bird closely resemble 
eggs of P. guirahuro, and are of a broad oval shape ‘and glossy. 
They are white or pinkish-white, densely speckled and blotched 
with rich reddish-brown, brown- lake or maroon, and lavender-grey. 
The markings are more or less confluent at the broad end of the 
egg, and form an irregular zone or imperfect cap. Examples 
measure from -94 to 1-11 in length, and from -72 to -8 in breadth. 
2, Argentine Republic. Crowley Bequest. 
5, Argentine Republic. Crowley Bequest. 
5. Argentine Republic, Nov. A. H. Holland, Esq. [C 
5. Argentine Republic, Nov. A. H. Holland, Esq. iC. | 
3. Argentine Republic, Nov. A. H. Holland, Esq. { C 
4, Buenos Ayres (with one egg of We Hudson, Ksq. re p 
Molothrus  bonariensis) (see 
p. 375). 
3. Buenos Ayres (with three eggs of = W. H. Hudson, Esq. [P.]. 
M. bonariensis). 
5. Aj6, Buenos Ayres, 30th Oct. (C. Ernest Gibson, Esq. [T.]. 
H, B. Grant). 
