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



49. Micrastur guerilla Cassin. 



The only specimen seen, an immature male, was killed in a dense 

 thicket near Los Amates. The only evidence of adult plumage 

 on this specimen consists of a band of slate-colored feathers around 

 the lower hind neck, white chin, slaty throat and a very few scattered 

 feathers on the chest and thighs. Salvin and Godman's description of 

 the juvenile plumage of this species* applies very well to this speci- 

 men except as to the number of white bars on the tail ; their bird 

 had four; this one has five. The obscure white collar, seen only 

 on immature birds, is probably a vestigial character, which in melan- 

 oleucns remains permanent, and in mirandollei has disappeared 

 altogether. Iris light brown; maxilla black; mandible, feet and 

 bare ocular and loral area lemon-yellow. 



50. Herpetotheres cachinnans (Linnaus). 



This curious hawk was encountered only at Los Amates and 

 Mazatenango. It haunted the environs of the former town, and 

 morning and evening made the place resound with its loud calls, 

 often keeping them up till long after dark. One was secured at 

 Los Amates. Iris dark brown; base of bill yellow; from nostril 

 outward, black; feet straw color. 



51. Polyborus cheriway (Jacquiri). 



Several caracaras were seen at El Rancho and Gualan, and one 

 was secured at San Jose". 



Family Strigidse. 



52. Otus flammeolus (Kaup). 



A single specimen was obtained at Tecpam by Mr. Barber. Iris 

 dark brown; cere gray. Stomach contained beetles. 



53. Speotyto cunicularis hypogaea Bonaparte. 



A few were seen at Gualan and El Rancho in dry gulches. One 

 was secured at the latter place. Iris yellow; bill greenish yellow; 

 feet yellowish green. 



54. Glaucidium brasilianum ridgwayi Sharpe. 



At El Rancho and Patulul this little owl was common. Two 

 *Biologia Centrali Americana, Aves, Vol. Ill, p. no. 



