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 suJphuratus bolivianus Ihering, Revista Mus. 

 Paulista, vi. 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. 0*8 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 105 to 1*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. F.] 



148. SlRYSTES S1BILATOR. 



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. 

 Proc. U.S.Nat. Mus. xxv. p. 136 (1902: Sapucay); Ihering, 

 Revista Mus. Paulista, vi. p. 326 (Paraguay) . 



a,b. S ? 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 

 oa 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. 



[Auother of our common birds. Its favourite haunts are 



