366 MESSRS. SCLATER AND SALVIN [May 27, 
Micrastur mirandollei, Scl. et Salv. P. Z. S. 1867, p. 759. 
Hab. Eastern Peru, Chyavetas (Bartl.); Rio Negro et Rio 
Brancho (Naét.) ; Barra do Rio Negro (Cast. et Dev.). 
This bird is most nearly allied to the preceding species, but is 
easily recognizable by its smaller size and slaty-grey upper plumage. 
The only example of it in this country is, as far as we know, the 
specimen obtained by Mr. E. Bartlett in Eastern Peru, noticed in 
our article, P. Z. S. 1867, p. 759. As already mentioned there, 
Sclater has compared the typical specimen of Astur mirandollii in 
the Leyden Museum with an example of v. Pelzeln’s Mierastur 
macrorhynchus in the same collection, and has little doubt of their 
being identical. 
In the Paris Museum there is a specimen of this bird collected by 
Castelnau and Deville at Barra do Rio Negro. 
In its range this species appears to be restricted to the district 
of Upper Amazonia. 
3. MicrAsSTUR RUFICOLLIS. 
Sparvius ruficollis, Vieill. N. D. x. p. 322, et E. M. iil. p. 1263; 
Puch. R. Z. 1850, p. 91. 
Micrastur ruficollis, Strickl. Orn. Syn. p. 122. 
Falco xanthothorax, Temm. Pl. Col. 92. 
Climacocercus wanthothorax, Burm. Syst. Ueb. ii. p. 85. 
Micrastur xanthothoraz, Pelz, Orn. Bras. p. 7. 
Hab. S.E. Brazil (Burm.); S. Paulo (Natt.); Goyaz (St¢.- 
Hilaire). 
The adult of this species is well figured in Temminck’s ‘ Planches 
Coloriées,’ no. 92. It is easily recognizable by its deep rufous, 
almost chestnut breast. In younger specimens this colour is only 
partially apparent, and the bars on the belly are much wider apart ; 
but in all stages we have seen the reddish-brown back is more or 
less persistent, thus distinguishing it from M. leucauchen. 
Our specimens of this bird are from Rio and Bahia. Natterer 
obtained it in the Province of San Paulo, and St.-Hailaire in that of 
Goyaz. 
4. MicrasturR ZONOTHORAX. 
Climacocercus zonothorax, Cab. J. f. O. 1865, p. 406. 
Micrastur zonothoraz, Scl. et Salv. P. Z. S. 1869, p. 253. 
Hab. Puerto Cabello; Bogota. 
Dr. Cabanis has lately separated this bird as a northern repre- 
sentative of the preceding, stating that it differs in its larger size, 
stouter bill, and in the darker reddish-brown of the upper surface, 
also in having the red-brown on the lower surface confined to the 
throat and not extending over the breast. 
We have not yet met with the adult of this species, but have 
referred to it a bird in immature plumage collected by Mr. Goering 
in the coast-region of Porto Cabello, which is the same district as 
that whence Cabanis’s type specimens were derived. A second im- 
mature bird, in the collection of Salvin and Godman, is from Bogota. 
