1871. J MR. P. L. SCLATER ON BIRDS FROM OYAPOK. 749 



I think it is possible after all that P. %inifilis may be only the 

 young of P. duineriliana ; 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. Sclater, M.A., Ph.D., F.R.S., Secretary to the 

 Society. 



[Received November 29, 1871.] 



Madame A dele Verdey, of 4o Rue Turenne, Paris, has lately sent 

 to me 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 fili- 

 cauda, Celeus grammicus and others, mixed up with well-known 

 Cayenne species. 



There are also two apparently new species in the collection, con- 

 cerning which I have the following notes to offer. 



Family Tyrannise. 



1. OCHTHOECA MURINA, Sp. IIOV. 



Pallide murino-brunneu fere unicolor, pileo obscuriore : alls cau- 

 daque nigricantibus, marginibus pallidioribus : loris et oculo- 

 rum ambitu fiavidis : rostro et pedibus nigris : long, tota o'A, 

 alee 3, caudce 2 - 3. 

 Hub. 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 sepa- 

 rable. When instituting the genus Ochthoeca (Wiegm. Arch. 1847, 

 p. 2oo), Dr. Cabanis assigned to it Muscicapa soya, though he sub- 

 sequently transferred this species to Aulanax (J. f. O. 185G, p. 2). 



I have at present specimens of the following sixteen species of this 

 genus (in which I now include Mecocerculus of my Catalogue) in 

 my collection : — 



a. OcHTHODiAiiTA, Cab. 



1. O.funiigata (Boiss.) ; Cat. A. B. p. 198, ex Columbia et rep. 

 iEquat. 



b. Ochthoeca, Cab. 



2. O.fumicolor, Scl. Cat. A. B. p. 198, ex Columb. et rep. JEcpiat. 



3. O. superciliosa, Scl. et Salv. P. Z. S. 1870, p. 78G, ex Vene- 

 zuela alta. 



