616 
Mr. Charles Chubb on the 
Basileuterus auricapillus Sharpe, Cat. B. Brit. Mus. x. 
p. 393; Berlepseh, J. f. O. 1887, p. 114 (Paraguay) ; Kerr, 
Ibis, 189.2, p. 123 (Rio Pilcomayo) ; Oberholser, Proc. U.S. 
Nat. Mus. xxv. p. 141 (1902: Sapucay); Ihering, Revista 
Mus. Paulista, vi. p. 318 (Paraguay). 
a. $ ad. Sapucay, October 10, 1902. 
b , c. £ ad. ,, December 1902. 
d, e. $ ad. „ February 1904. 
/. $ ad. „ March 16, 1904. 
Bill liorn-coloured, lighter below ; tarsi and feet yellowish 
horn-coloured ; iris brown. 
g. $ ad. Sapucay, April 9, 1903. 
h, i. ? ad. „ July 1904. 
I do not observe, in comparing this series of individuals, 
that they are darker above, but notice that the under surface 
is brighter and clearer yellow. 
Having taken the wing-measurements of the entire series 
in the collection of the British Museum, I find that the 
northern form from British Guiana, Trinidad, and Colombia 
is slightly larger. 
[This species is fairly common throughout Paraguay. 
There is nothing peculiar about its habits.— W. F.~\ 
188. PARULA P1TIAYUMI. 
Pico de punzon celeste de pecho oro Azara, Apunt. i. p. 421. 
no. cix. (1802). 
Sylvia pitiayumi Vieill. N. Diet. d’Hist. Nat. xi. p. 276 
(1817 : Paraguay). 
Parula pitiayumi Sharpe, Cat. B. Brit. Mus. x. p. 259, 
pi. xi. fig. 1 (1885). 
Compsothliypis pitiayumi Berlepseh, J. f. 0. 1887, p. 113 
(Paraguay); Ihering, Revista Mus. Paulista, vi. p. 318 
(Paraguay). 
Compsothlypispitiayumi pitiayumi Oberholser, Proc. U.S. 
Nat. Mus. xxv. p. 143 (1902). 
a. $ imm. Sapucay, February 3, 1904. 
b, c. S ? ad. „ March 1903. 
/I 
