1866.] MR. P. L. SCLATER ON A NEW SPECIES OF ACCIPITER. 303 



In that magnificent collection are two specimens evidently of the 

 same species, transmitted from Bogota by M. Leydig. As, however, 

 the bird does not as yet appear to have received a name, I propose 

 to call it, from the conspicuous chestnut colouring of the belly, 



ACCIPITER VENTRALIS, Sp. nOV. 



Supra obscure plumbeus, subtus castaneus gula albicante, pectore 

 plumbescente : alis nigris, subtus a/bo transfasciatis ; Cauda 

 nigra, fasciis transversis quinque, subtus a/bis, supra plumbeis, 

 item margine apicali albo : rostro nigro, pedibus fiavis, ungui- 

 bus nigris; long, tota 10 poll. Angl., alee 6"8, caudee 5 -5, tarsi 

 2, dig. med. cum ungue 1*6. 

 2 ■ Similis mari, sed major et gula dilutiore, fere albida : pec- 

 tore vix plumbeo tincto. 

 Hab. in Nova Granada interior. 

 Mus. Parisiensi et dom. Gurney. 



This is a typical Accipiter with rather elongated wings and long 

 middle claw as in Ace. erythrocnemis. It is readily distinguishable 

 from every other American species of the group by its chestnut belly 

 and plumbeous thorax. In Mr. Gurney's skin the breast is suffused 

 with plumbeous, and there are faint shaft-stripes on the throat and 

 breast. The plumage is in moult, but the third and fourth primaries 

 appear to be nearly equal and longest. The tarsi are long and very 

 slender. The under wing-coverts are white, spotted with black and 

 suffused -with rufous. Mr. Salvin and I propose to give a figure of 

 this bird in the second number of ' Exotic Ornithology.' 



I am acquainted with nine American species of Accipiter, namely : — 



1. Accipiter fuscus. 



Falco fuscus, et dubius, Gm. 

 Accipiter fuscus, Baird, B. N. A. p. 18. 

 Falco velox et F. pennsylvanicus, Wilson. 



Hab. Whole of North America and Mexico down to Guatemala, 

 where specimens were obtained by Mr. Salvin. 



2. Accipiter erythrocnemis. 

 Falco nisus, Max. Beitr. iii. p. 111. 



Nisus striatus, D'Orb. Vov. p. 88; Burm. Syst. Ueb. ii. p. 71 

 (see Jard. Contr. 1850, p. 64). 



Accipiter erythronemis, Gray, List of Accipitres (1848), p. 70; 

 Sclater, P. Z. S. 1855, p. 134, et 1860, p. 96; Sclater et Salv. Ibis, 

 1859, p. 218; Salvin, Ibis, 1861, p. 140. 



Nisus fringillarius, subsp. erythronemius, Kaup, Arch. f. Nat. 

 (1850) xvi. Bd. i. p. 34. 



Nisus chiouogaster, Kaup, P. Z. S. 1851, p. 41. 



Hab. Whole of South America and northwards to Guatemala, 

 where numerous examples were obtained by Mr. Salvin. The per- 

 fect adult in both sexes appears to be white below, with narrow shaft- 

 stripes, which are occasionally absent, in which stage the bird is N. 

 chiouogaster, Kaup. A specimen marked as the tvpe of " Sparuius 



