265 
Birds of Paraguay. 
[This species is resident in Paraguay, and is generally to 
be met with in small flocks of from fifteen to twenty indi¬ 
viduals. Their favourite haunts are clumps of low bushes 
in the open camps, their plumage mingling so well with the 
foliage that they are hard to detect until they fly screaming 
away. Although the bird is so common, I know nothing of 
its nesting-habits.— W. F.~\ 
40. CERYLE AMERICANA. 
Alcedo americana Gm. Syst. Av. i. p. 451 (1788: Cayenne). 
Martin-pescador verde obscuro Azara, Apunt. iii. p. 389. 
no. ccccxxi. (1805). 
Alcedo viridis Vieill. N. Diet. d’Hist. Nat. xix. p. 413 
(1818, ex Azara). 
Ceryle americana Berlepsch, J. f. O. 1887, p. 23 (Lambare) ; 
Sharpe, Cat. B. Brit. Mus. xvii. p. 131 (1892) ; Ihering, 
Revista Mus. Paulista, vi. p. 335. 
a. $ ad. Sapucay, April 19, 1903. 
Bill and feet black ; iris brown. 
41. Baryphthengus ruficapillus. 
Tucano Tutu Azara, Apunt. i. p. 243. no. Iii. (1802). 
Baryphonus cyanoqaster Vieill. N. Diet. d’Hist. Nat. xxi. 
p. 317 (1818). 
Prionites ruficapillus Hartl. Xnd. Azara, p. 4 (1847). 
Momotus cyanogaster Scl. P. Z. S. 1857, p. 255 (Paraguay)* 
Baryphthengus ruficapillus Berlepsch, J. f. O. 1887, pp. 22, 
121 (Lambare); Sharpe, Cat. B. Brit. Mus. xvii. p. 330 
(189.2); Ihering, Revista Mus. Paulista, vi. p. 334 (Paraguay). 
a, b, c. d ; d. $ ad. Sapucay, April, May, July, and 
October 1902-04. 
Bill black ; tarsi and feet purplish slate-coloured ; iris 
ruby-brown. 
These four specimens appear to be fully adult, being 
uniform in colour above, but the cinnamon-rufous band on 
the lower breast varies both in colour and extent. 
[Resident, but not common. This is the Guiratoro 
(Bull-bird), not so named on account of its voice, but on 
account of its peculiar nesting-habits. Along the hills at 
