ARA, 569 
Costa Rica and the State of Panama to Western Ecuador. In Colombia a small form 
again appears which may or may not be the same as that of Mexico. The only southern 
specimen accessible to us is even smaller than any of our series from the latter country, 
so that we do not feel in a position to decide this question. Mr. Ridgway also writes 
to say that a trade-skin from Bogota in the United States National Museum is also 
very smal], and he, in fact, was the first person to draw our attention to the point. 
Should this southern bird be found to be sufficiently distinct for separation it will be 
somewhat difficult to say whether the Mexican or the southern bird should bear 
the name Ara militaris, but it will be advisable to continue its use for the northern 
form. 
We have no special account of the habits of this species, which Mr. Richmond? 
says resemble those of Ara macao. THe adds that the naked skin on the head is pale 
carmine-purple, the iris dark yellow, but varying in different individuals. A specimen 
from the Rio Nercua, obtained during Lieut. Michler’s expedition to Darien, and now 
in the United States National Museum, was obtained in the cordillera in which that 
river takes its rise 3. 
6. Ara severa. 
Brasilian Green Macaw, Edw. Glean. v. p. 41, t. 229°. 
Psittacus severus, Linn. Syst. Nat. i. p. 140°. 
Ara severa, G. R. Gray; Cassin, Pr. Ac. Phil. 1860, p. 187°; Lawr. Ann, Lyc. N. Y. vii. p. 474°; 
Salv. Ibis, 1871, p. 91°; Salvad. Cat. Birds Brit. Mus. xx. p. 161°. 
Viridis, capite summo cxruleo lavato, fronte, capitis lateribus et mento marginibus castaneo-fuscis, lineis 
plumosis genarum nigris; tectricibus alarum majoribus et remigibus glauco-ceruleis nigro marginatis, 
secundariis extrorsum medialiter rubidis et ceruleo terminatis, reliquis plerumque extrorsum ceruleis, 
omnibus subtus rubro lavatis: alis subtus quoque rubidis, margine carpali et tectricibus minoribus coccineis, 
majoribus viridescentibus ; genis nudis, albido-carneis ; iride (ave viva) flava. Long. tota circa 18-0, ale 9-3, 
caude rectr. med. 9:0, rectr. lat. 4:5, rostri culminis 1°8, tarsi 0°8. (Descr. exempl. ex Colombia. 
Mus. nostr.) — 
Hab. Panama, Lion Hill (M*Zeannan*), mouth of the R. Nercua ( Wood *).—Cotomsra ; 
Ecuapor; Peru; Bouivia; AmMaAzons VALLEY and Gurana®, 
Of the presence of this Ara within our region we have only two records—a specimen 
having been sent by M‘Leannan to Lawrence‘ in one of his earlier collections from 
the Isthmus of Panama, another was obtained during Lieut. Michler’s expedition 
to the Isthmus of Darien®. No Central-American example has reached our hands, 
On the continent of South America A. severa has a wide range over the eastern slopes 
of the Andes from Colombia to Bolivia, and is found throughout the Amazons Valley 
and in Guiana, though we have seen no specimens from the latter country ° 
BIOL. CENTR.-AMER., Aves, Vol. II., February 1897. 72 
