160 Annals of the Carnegie Museum. 



1899, by one of Mr. Smith's collectors. It is doubtless to be listed as 

 a winter resident. 



56. Falco columbarius columbarius Linnaeus. 



Four specimens : Bonda, Mendeguaca, and Rio' Hacha. 



The Pigeon Hawk is probably a winter resident in this region, but 

 all the records were made in April and May. Mr. Smith's collection 

 contains specirriens from Bonda, April 15 and 22, and from Mende- 

 guaca, May I, 1899. The writer took a single individual, the only one 

 he has ever seen in this section, near the mouth of the river at Rio 

 Hacha, May 2, 1914. Every one of these birds is in worn winter 

 plumage, the only male still in the brown immature dress, suggesting 

 that they may have been individuals in poor physical condition, re- 

 tarded in their migration. 



57. Falco albigularis albigularis Daudin. 



Hypotriorchis rufigularis Sclater, Proc. Z06I. Soc. London, 1855, 134 



("Santa Marta"). 

 Falco rufigularis Bangs, Proc. Biol. Soc. Washington, XIII, 1899, 92 (La 



Concepcion). — Allen, Bull. Am. Mus. Nat. Hist., XIII, 1900, 131 (Minca). 



Five specimens : Bonda, Cincinnati, and Mamatoco. 



This little falcon is a rare bird in this region, where it is mainly 

 confined to the Tropical Zone, ranging from sea-level up to 5,000 feet. 

 It is, however, more common in the foothills than in the lowlands, and 

 is always seen in open country among scattered trees or in cultivated 

 lands. We are unable to distinguish specimens from this region from 

 others from elsewhere (except those from eastern Bolivia), although 

 Mr. Chubb has recently seen fit to further subdivide the species {Bul- 

 letin British Ornithologists' Club, XXXIX, 1918, 22). 



58. Falco fuscocoerulescens fuscocoerulescens Vieillot. 

 Two specimens : Mamatoco. 



Paraguay is the type-locality of this form, and our specimens from 

 Bolivia may doubtless be considered typical. Colombian and Bolivian 

 skini are similar, although there is some individual variation. Some 

 specimens, probably younger birds, have the chest more or less streaked 

 with dusky black, while in others it is immaculate. The two specimens 

 above recorded are in fresh dark slaty dress above, except for some of 

 the remiges and rectrices, which are still brown and worn. The avail- 



