123 
Paraguay , Bolivia , and Southern Brazil . 
A $ ad. Pan de Azucar, Brazil. Sept. 20, 1909. 
c,d. S ? ad. Colonia Mihanovitch, N. Argentine. Nov. 5, 
1909. 
The November female was sitting. I was unable to dis¬ 
tinguish this species in life from M. ferox . 
98. Myiarchus ferox. 
Myiarchus ferox Scl. Cat. B. xiv. p.253; Arg. Orn. i. 
p. 156. 
a. S ad. Arjerichi, Paraguay. Aug. 9, 1909. 
b. $ ad. Puerto San Juan, Paraguay. Aug. 26, 1909. 
c. S ad. Desaguadero, Paraguay. Aug. 29, 1909. 
d. S ad. Sapatero Cue, Paraguay. Sept. 3, 1909. 
e. S ad. Biacho Paraguay, Mirin, Brazil. Oct. 2, 1909. 
f. S ad. Babicho, Brazil. Oct. 8, 1909. 
g. S ad. Boca de Homiguera, Brazil. Oct. 9, 1909. 
h. ? ad. Fuerte Olimpo, Paraguay. Oct. 21, 1909. 
Irides hazel; bill brown; legs and toes very dark slate- 
coloured. 
Numbers of this Tyrant were observed throughout the 
river expedition. They were usually seen perched on the tops 
of the trees, from which they made short flights to catch 
passing insects. 
On the 9th of October at Boca de Homiguera a pair were 
seen carrying building materials, and were evidently starting 
to nest. 
99. Empidonomus aurantio-atro-cristatus. 
Empidonomus aurantio-atro-cristatus Scl. Cat. B. xiv. 
p. 266 ; Arg. Orn. i. p. 157. 
a. S ad. Boca de Homiguera, Brazil. Oct. 9, 1909. 
Irides brown; bill, legs, and toes sooty-black. 
100. Tyrannus melancholicus. 
Tyrannus melancholicus Scl. Cat. B. xiv. p. 273; Arg. 
Orn. i. p. 158. 
a. S ad. Los Ynglases, Ajo. Feb. 3, 1909. 
b. S ad. „ „ Mar. 12, 1909. 
c. S ad. ,, „ Dec. 29, 1909. 
f) 
