572 
Mr. Charles Chubb on the 
month of April, and wears off again almost to a band on 
the breast in July. The upper surface is also darker in 
April, including the black at the base of the tail and the 
ends of the primaries. 
Three eggs, collected on October 16, 1903, are pinky 
white to rich cream-coloured with large sepia-brown blotches, 
mostly at the larger end, and underlying spots of lavender- 
grey. Axis T05-1T5 inch; diam. 0*85. 
[This species is resident, but not common, in Paraguay. 
As it is a camp-loving bird and is usually perched upon some 
conspicuous post or dead tree its presence is easily detected, 
and its white-barred wings serve to identify it when in flight. 
During the breeding-season individuals are to be met within 
pairs, but the rest of the year they are solitary. Although 
they undoubtedly nest here, I know nothing of their 
breeding-habits.— TV. A".] 
111. T^enioptera irupero. 
Pepoazd irupero Azara, Apunt, ii. p. 171. no. cciv. (1805). 
Tyrannus irupero Vieill. N. Diet. d'Hist. Nat. xxxv. p. 92 
(1819: Paraguay). 
Tcenioptera irupero Berlepsch, J. f. O. 1887, p. 12 
(Lambare) ; Sclater, Cat. B. Brit. Mus. xiv. p. 13; Ihering, 
Revista Mus. Paulista, vi. p. 321 (Paraguay) ; Hellmayr, 
Abhandl. Akad. Wiss. Miinchen, xxii. p. 536 (1906). 
a. $ ad. Sapucay, June 11, 1904. 
Bill and feet black ; iris brown. 
b. $ ad. Sapucay, August 23, 1904. 
[This is one of our rare Paraguayan birds and is only to 
be met with in swampy districts which border on the forest. 
A lonely tree of low growth is the most favourite perch of 
this bird, the white plumage making it visible at a consider¬ 
able distance. It is generally safe from the hunter, as the 
impassable swamps in which it lives are wisely avoided. The 
only time when it is possible to shoot it is in the early 
morning, when it first leaves the shelter of the forest and 
being hungry is somewhat more careless than during the rest 
of the day.-— TV. F] 
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