Catalogue of a Collection of Birds. 317 



SuBFAM. ACCIPITRIN^. 



148. Micrastur gilvicollis ( VieilL). $, and 9 . 



149. " poliogaster {Temm^X $, . 



The upper plumage is slate black ; the tail is black, crossed with three 

 white bars freckled with brown ; the under plumage is of a bufty cream 

 color; legs yellow. 



Length IV^ in.; wing 9^ ; tail 8; tarsi 3. 



There is a specimen in the Museum of the Pliiladelphia 

 Academy precisely in the plumage of mine, which is marked 

 M. 2>oliogaster v;\i\\ ?iX. In Temminck's figure, PL Col. 264, 

 the under phimage is of a uniform grey ; with this exception, 

 they agree with his plate ; both specimens appear to be fully 

 adult. 



SuBFAM. FALCONING. 



150. Ilarpagus hidentatus {Lath.). 



SuBFAM. MILVINJd:. 



151. Cymindis Cayennensis {Gm.). 



SuBFAM. CIRCIN^. 



152. Circus Iludsonicus (Z^V^-?^.). 



Fam. STEIGID^. 



SuBFAM. SYRNIIN^. 



153. Syrnium vii'gatum, Cass. 



Fam. HIEUNDINID^. 



SuBFAM. HIRUNDININ^. 



154. Hirundo Jwrreorum, J5arto7i. 



155. Petrochelidon lunifrons {Say.). 



156. " leucoptera {Gm). 



157. Cotyle flavigastra {Vie ill.). 6 and 9, 



These specimens are smaller than some I have from Cayenne ; 

 the wings are much shorter, those of the male being ^ an inch 



