588 
Mr. Charles Chubb on the 
Amazon) ; Plellmayr, Abhandl. Akad. Wiss. Miinchen, 
xxii. p. 643 (1906). 
Rhynchocyclus sulphurescens Berlepsch, J. f. O. 1887, 
p. 131 (Paraguay) ; Sclater, Cat. B. Brit. Mus. xiy. p. 168; 
Oberh. Proc. U.S. Nat. Mus. xxv. p. 136 (1902 : Sapucay); 
Ihering, Revista Mus. Paulista, yi. p. 324 (Paraguay). 
a. $; b, c. $ ad. Sapucay, March 7, 27, 1904. 
Bill black above, cream-coloured below; tarsi and feet dark 
slate-coloured ; iris brown. 
d, e. ? ad. Sapucay, April 18, 30, 1904. 
/. $ ad. „ July 28, 1904. 
g. $ ad. „ August 30, 1904. 
These seven individuals are perfectly identical with 
others, in the British Museum, from Brazil and other 
localities. 
[This species is common throughout Central Paraguay 
wherever there are large forests. I do not think there 
is anything peculiar about it which does not apply to 
many others of the same family. I have noticed that its 
favourite hunting-ground is along the banks of the forest 
streams, but that is the favourite place of other birds which 
catch flies on the wing. The nest is a wonderful purse¬ 
shaped affair some seven inches in length, the entrance 
leading from below upwards. Suspended as it is from 
the extreme tip of a slender branch and overhanging a 
stream it is safe from everything but men, and possibly for 
this reason the species is so common. All the birds which 
build in the forks of trees or along the larger branches must 
pay a heavy toll annually to the numerous snakes, opossums, 
&c. which inhabit the woods.— W. F.] 
145. Khynchocyclus grisescens, sp. nov. 
Allied to R. sulphurescens, but differs in being olive-grey 
above instead of green ; the head somewhat darker and 
inclining to lead-colour; tail-feathers pale brown, edged with 
whitish; quills also pale brown, margined with olive-grey. 
The two bars on the wings, formed by the margins of the 
median and greater coverts, are white instead of yellow ; 
