602 Mr. Charles Chubb on the 



The tail, in this series, is uniform black with a trace of 

 white at the extreme base. 



[These birds appear during the month of March and 

 by the end of April have left us. I have always thought 

 this very strange, and have watched carefully in the hopes 

 of finding their haunts during the other months of the 

 year. Among the examples secured were a few immature 

 males still in the female plumage, which leads me to believe 

 that they breed in this country, but where they go to 

 afterwards" is a mystery. 



In this district there are all the conditions imaginable — 

 dense forests with numerous streams, a low range of hills of 

 some nine hundred to a thousand feet in elevation, and 

 level cattle-breeding lands in the north ; yet in spite of all 

 these varied localities these birds disappear entirely. 



166. TlTYRA INQUISITOR. 



Lanius inquisitor Licht. Verz. Doubl. p. 50 (1823 : San 

 Paulo). 



Tityra inquisitor Berlepsch, J. f. O. 1887, p. 132 (Para- 

 guay) ; Sclater, Cat. B. Brit. Mus. xiv. p. 331 ; Ihering, 

 Hevista Mus. Paulista, vi. p. 327 (Paraguay). 



Tityra atricapilla Bertoni, Aves Nuev. Paraguay, p. 109. 



a, b. <$ ; c-f. $ ad. Sapucay, March 1901. 



ff-k. $ ; I, m. ? ad. ,, April 1901<. 



n. 3 ad. Sapucay, September 1901. 



These individuals agree perfectly with the series in the 

 British Museum. The white at the base of the tail-feathers 

 is much more extended than in T. brasiliensis, reaching some 

 distance from the base along the margin of the inner webs. 



[These birds are very numerous during the months of 

 March, April, and the early part of May, and I have obtained 

 one example in September; in the remaining months of the 

 year they are among the rarest species. I have observed 

 them most frequently along the water-courses in large 

 forests, but have not yet found them breeding. — W. F.~\ 



167. Hadrostomus rufus. 



Caracterizado canela y corona de pizarra Azara, Apunt. 

 ii. p. 181. no. 208, ? (1805). 



