573 
Birds of Paraguay. 
112. Alectrurus risorius. 
Cola r or apardo y bianco Azara, Apunt. ii. p. 241.no. ccxxvi. 
(1805). 
Le guira-yetapa Vieill. N. Diet. d/Hist. Nat. xii. p. 409 
(1819: Paraguay). 
Muscicapa risora Vieill. Gal. des Ois. i. p. 209, pi. cxxxi. 
(1825 : Paraguay). 
Alectorurus guira-yetapa Berlepsch, J. f. O. 1887, p. 117 
(Paraguay). 
Alectrurus risorius Sclater, Cat. B. Brit. Mus. xiv. p. 39 ; 
Xhering, Revista Mus. Paulista, vi. p. 324. 
a, b . ? ad., $ imm. Sapucay, April 17, 1903. 
c. $ ad. Sapucay, April 22, 1904. 
d. S ad. „ June 6, 1904. 
113. Cybernetes yetapa. 
Yiperu Azara, Apunt. i. p, 322. no. Ixxv. (1802). 
Muscicapa yetapa Vieill. N. Diet. d ? Hist. Nat. xxi. p. 460 
(1818 : Paraguay). 
Cybernetes yetapa Berlepsch, J. f. O. 1887, p. 117 
(Paraguay); Sclater, Cat. B. Brit. Mus. xiv. p. 40 ; Ihering, 
Revista Mus. Paulista, vi. p. 324 (Paraguay). 
Gubernetes yetapa Hellmayr, Abhandl. Akad. Wiss. 
Munchen, xxii. p. 647 (1906). 
a . ? ad. Sapucay, November 16, 1902. 
b, c. ? ad. „ May 3, 6, 1903. 
Bill horn-coloured ; feet black ; iris brown. 
d, e. cf ? ad. Sapucay, July 17, 19, 1904. 
[Resident, although nowhere common. It is very widely 
distributed through Central Paraguay, its favourite haunts 
being the low swampy grounds surrounded by forest, where 
there is an abundance of insect life. Like Tcenioptera 
irupero, the usual perch is some of the low swamp trees. 
It is generally found in pairs throughout the year, and I have 
never met with larger numbers. Its food consists of insects, 
which are captured on the wing. 
This bird is the true “ Guira yetapa,” as it remains with us 
all the year round, whereas the Scissor-tail, “ Milvulus 
2 q 2 
