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Show 1871.] MR. P. L. SCLATER ON BIRDS FROM OYAPOK. 749 I think it is possible after all that P. unifilis may be only the young of P. dumeriliana; but I cannot consider that this is yet proved to be the case. 7. Remarks on a Collection of Birds from Oyapok. By P. L. S C L A T E R , M.A., Ph.D., F.R.S., Secretary to the Society. [Eeceived November 29, 1871.] Madame Adele Verdey, of 45 Rue Turenne, Paris, has lately sent to m e for examination a considerable series of bird-skins collected by one of her correspondents at Oyapok-a place on the river of the same name which divides Cayenne from the northern frontier of Brazil. The collection is of much interest, as containing many forms which I have previously seen only from the Upper Amazons, such as Euphonia rufiventris, Heterocnemis argentata, Pipra filicauda, Celeus grammicus and others, mixed up with well-known Cayenne species. There are also two apparently new species in the collection, concerning which I have the following notes to offer. Family TYRANNID_E. 1. OCHTHOECA MURINA, Sp. nOV. Pallide murino-brunnea fere unicolor, pileo obscuriore : alis caudaque nigricantibus, marginibus pallidioribus : loris et oculorum amibitu flavidis : rostro et pedibus nigris; long, tota 5*alee 3, caudee 2*3. Hab. Oyapok, Cayenne. In general colour this species is very much like Sayornis pallida, but is rather paler and about half the size. I refer it, however, to Ochthoeca, from which the so-called genus Sayornis is scarcely separable. When instituting the genus Ochthoeca (Wiegm. Arch. 1847, p. 255), Dr. Cabanis assigned to it Muscicapa saya, though he subsequently transferred this species to Aulanax (J. f. O. 1856, p. 2). I have at present specimens of the following sixteen species of this genus (in which I now include Mecocerculus of m y Catalogue) in my collection:- a. O C H T H O D I A E T A , Cab. 1. O.fumigata (Boiss.); Cat. A. B. p. 198, ex Columbia et rep. _Equat. b. O C H T H O E C A , Cab. 2. O.fumicolor, Scl. Cat. A. B. p. 198, ex Columb. et rep. iEquat. 3. O. superciliosa, Scl. et Salv. P. Z. S. 1870, p. 786, ex Venezuela alta. |