590 
Mr. Charles Chubb on the 
Pitangus bolivianus Berlepsch, J. f. O. 1887, p. 118 (Para¬ 
guay) ; Sclater, Cat. B. Brit. Mus. xiv. p. 177. 
Pitangus sulphuratus bolivianus Ihering, Revista Mus. 
Paulista, yi. p. 326 (Paraguay). 
a. $ ad. Sapucay, May 1, 1903. 
Bill and feet black; iris brown. 
A clutch of three eggs, collected on October 11, 1903, are 
cream-coloured, with dark brown and black spots sparsely dis¬ 
tributed over the greater part of the surface, but clustered 
more thickly at the larger end, where they form an indistinct 
zone. Axis 1*05 to 1*1 inch; diam. 08 to 0*85. 
A second clutch, of three, obtained on November 16, 
1903, are smaller and more elongated in form, with scarcely 
any spots beyond those at the larger end, where they form 
quite a thick zone. Axis 1*05 to 1*] inch ; diam. 0‘7 
to 0*75. 
[Resident and fairly common throughout Paraguay. 
There is very little to add to the knowledge of this well- 
known bird.— W. jF.] 
148. SlRYSTES SIBILATOR. 
Pitador Azara, Apunt. ii. p. 135. no. cxci. (1805). 
Muscicapa sibilator Vieill. N. Diet. d'Hist. Nat. xxi. 
p.457 (1818: Paraguay). 
Sirystes sibilator Berlepsch, J. f. O. 1887, p. 118 (Para¬ 
guay) ; Sclater, Cat. B. Brit. Mus. xiv. p. 181; Oberh. 
Proe. U.S.Nat. Mus.xxv. p. 136 (1902 : Sapucay); Ihering, 
Revista Mus. Paulista, vi. p. 326 (Paraguay). 
a, b. c? ? ad. Sapucay, April 11, 30, 1903. 
Bill horn-coloured; feet dark slate-coloured, almost black ; 
iris brown. 
c. d , e. ? ad. Sapucay, March 24-30, 1904. 
Two of the females have rufous margins to the outer 
greater wing-coverts and a certain amount of yellow wash 
on the under surface, while a third female has more yellow 
below but no rufous on the greater coverts. The latter 
colour I imagine to be an indication of immaturity. 
[Another of our common birds. Its favourite haunts are 
