501 
from British Guiana. 
gineo nec fusco-nigricante, alis extus oleagineis &c. facile 
distinguenda. 
Of this species Mr. Whitely unfortunately obtained only a 
female specimen, so that I am unable to say whether the male 
exhibits brighter colours. It is quite distinct from any 
species known to me, but apparently allied to E. cassini —itself 
an aberrant species of Eucometis {cf. Biol. Centr.-Am., Aves, 
i. p. 307). If I am right in my conjecture as to the affinities 
of E. oleaginea , the sexes would not differ materially in 
coloration. 
2. Rhynchocyclus megacephalls (Sw.). 
Tyrannula megacephala , Sw. Orn. Draw. pi. 47. 
Rhynchocyclus megacephalus , Scl. Cat. Am. B. p. 221. 
Carimang River. 
These specimens agree with others from Pebas in the 
Amazons valley, which stand in our collection under this name 
{cf. Scl. & Salv. P. Z. S. 1887, p. 978; 1873, p. 280). 
3. Pionus vioLACEus (Bodd.). 
Pionus violaceus 3 Scl. Cat. Am. B. p. 355. 
Carimang River. Many specimens. 
4. Micrastur mirandollii (Schl.). 
Micrastur mirandollii , Scl. & Salv. P. Z. S. 1869, p. 365 
Sharpe, Cat. B. Brit. Mus. i. p. 76. 
Carimang River. 
A species originally described from a Guiana specimen, and 
since traced to the Amazons valley and the State of Panama. 
~h 5. Accipiter tinus (Lath.). 
Accipiter tinus, Gray, Gen. B. i. pi. 10; Sharpe, Cat. Jh 
Brit. Mus. i. p. 139. 
Carimang River. 
I 6. Ardetta exilis (Gm.). 
Ardetta exilis , Baird, Brew., & Ridgw. Water B. N. Am. 
i. p. 72. 
Carimang River. 
A well-known North-American species, also found in 
Brazil. 
2 N 
SER. V.-VOL. IV. 
