Ornithology of Central America. ~ 219 
Subfam. Falconing. 
283. Falco anatum, Bp. (N. A.) 
A single example of this bird, in an immature state of plu¬ 
mage, was shot at Duenas in February,, 1858. 
284. Hypotriorchis femoralis (Temm.). Falco femoralis, 
Temm. PI. Col. 121 et 343. 
Transmitted by Mr. Skinner. 
285. Hypotriorchis rufigularis (Daud.): Strickl. Orn. 
Syn. p. 88. 
.Transmitted by Mr. Skinner. 
286. Tinnunculus sparverius (Linn.). (N.A.) 
This is a very abundant species over the whole republic of 
Guatemala; but at Duenas it is migratory, being a visitant there 
only during the winter months. The name applied to this 
species by the Spaniards is c Klis-klis.’ 
287. 1IarPx\.gus bidentatus (Lath.) : Temm. PI. Col. 38 
et 228. 
Transmitted by Mr. Skinner. 
Subfam. Milvin^e. 
288. Cymindis cayennensis (Gm.). 
The Norwich Museum contains an example of this species 
from Honduras. Mr. Leyland met with it in the S. Pedro 
Mountains. 
289. Cymindis uncinatus (Temm.), PI. Col. 103, 104 et 
115. 
Transmitted by Mr. Skinner. 
290. Rostrhamus sociabilis (Vieill.). 
Salvin ascribes the immense flights of hawks seen by him in 
the month of March in the Pacific coast-region, migrating in a 
north-westerly direction, to this species. The bird is well known 
to the Spaniards under the name of the c Asacuani and the 
term has become proverbial for a person who is constantly wan¬ 
dering from place to place. Mr. Leyland procured a single 
specimen of this bird near the Lake of Peten. 
