82 FIELD MUSEUM OF NATURAL HISTORY ORNITHOLOGY, VOL. I. 



38. Accipiter chionogaster Kaup. 



One specimen, a male, was taken by Mr. Barber at 8,500 feet, 

 near Tecpam. It is apparently not a common species in the regions 

 visited. Iris tawny; legs ochre; cere and eyelid gallstone-yellow. 



39. Buteo platypterus (Vieilloi). 



In a heavy forest cleared of underbrush and planted to coffee, 

 near Patulul, this species was found to be common, but not so else- 

 where. Three adult specimens and two that were immature were 

 obtained between March 25th and April 3d. 



40. Urubitinga anthracina (Lichtensteiri) . 



Mexican black hawks were seen in the lowlands near both coasts 

 and also in the interior at least up to 5,000 feet. A pair of adults 

 was taken at San Jose. They were perched on a tree where they 

 had an extended view of the beach, whence they appeared to derive 

 their food. Iris dark brown; feet and base of bill yellow. 



41. Asturina plagiata Schlegel. 



Three specimens were taken in all, one adult and one immature 

 at Gualan, and another, also immature, at Patulul. At the latter 

 place, a pair was attending a nest high in an enormous tree that 

 stood in a field. What this nest contained there were no means 

 of finding out. The immature plumage of this species is so similar 

 to that of Buteo platypterus that at first sight it is difficult to dis- 

 tinguish them, but the white upper tail coverts and four emarginate 

 primaries are diagnostic characters of plagiata. Iris dark brown; 

 cere and legs yellow. 



42. Rupornis ruficauda griseocauda (Ridgway}. 



This was the. most abundant and easily approached hawk en- 

 countered in the republic. Four were taken at Los Amates and 

 one at San Jose. None were noted in the interior highlands. The 

 habits of this hawk are like those of the Buteos. They sit in exposed 

 places, where from a height they can keep close watch on the river 

 bank, open swamp or field that happens to be the hunting ground 

 of the particular individual. Only the outer rectrices of the San 

 Jose specimen show even traces of rufus in the light bars; but this 

 color appears on all the rectrices of the Los Amates birds. 

 cere and feet vellow. 



