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Show 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 albo transfasciatis ; cauda nigra, fasciis transversis quinque, subtus albis, supra plumbeis, item margine apicali albo : rostro nigro, pedibus flavis, ungui-bus nigris: long, tota 10 poll. Angl., alar 6'S, caudar 5'5, tarsi 2, dig. med. cum ungue 1*6. 2 . Similis mari, sed major et gula dilutiore, fere albida : pectore 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 sbaft-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, G m . 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. Voy. 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 chionogaster, 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 perfect- adult in both sexes appears to be white below, with narrow shaft-stripes, which are occasionally absent, in which stage the bird is N. chionogaster, Kaup. A specimen marked as the type of " Sparvius |
