OCR Text |
Show 1880.] NEW BIRDS FROM ECUADOR. 157 Obs. S. sibilatrici et S. albogriseo affinis, ab illo uropygio albo ab hoc tectricum alarum marginibus albo haud marginatis diversus. 1 he receipt of specimens of the true S. albogriseus has shown us that we were wrong in attributing the Amazonian bird to that species, from which it is readily distinguishable by the almost entire absence of the broad white margins to the wing-coverts. 6. MYIOCHANES NIGRESCENS, sp. nov. Contopus, sp. inc., Sclater, P. Z. S. 1858, p. 459. Myiochanes cinereus, Scl. Cat. A m . B. p. 232 (ex. b). Unicolor einereo-nigricans, pileo, alis et cauda paulo saturatioribus rostro superiore nigro, inferiore albicante; pedibus nigris : long. tota 4*4, alee 2*2, caudce 2*2. Hab. Sarayacu, Ecuador (Buckley). Mus. S.-G. et P.L. S. Obs. Sp. M. cinereo affinis, et ejusdem formae, sed colore nigri-cantiore distincta. An imperfect example of this species has long been in Sclater's collection, obtained at Gualaquiza on the Bio Santiago, in 1858, by Mr. Fraser. The receipt of additional and perfect skins enables us now to characterize it as distinct from M. cinereus, to which Sclater referred it in his ' American Catalogue.' Fam. PIPRID^E. 7. HETEROCERCUS AURANTIIVERTEX, sp. nov. Supra olivaceus, alis caudaque nigris olivaceo limbatis ; crista verti-cali elongata aurantio-rubra ; subtus medialiter fulvus, latera-liter in olivaceum transeuns ; gula et colli lateribus albis ; capitis lateribus cinereis; subalaribus olivaceis, remigum et rectricum pagina inferiore cinera ceo-nigra ; rostro obscure corylino, pedibus fuscis: long, tota 4*5, alee 3*4, caudce rectr. ext. 1*0, med. 2*0, tarsi 0*6, rostri a rictu 0*7. Hab. Sarayacu, Ecuador (Buckley). Mus. S.-G. et P. L. S. Obs. Species H. fiavivertici proxima, sed crista aurantiaca nee flava, et magis ampla, necnon colore corporis inferiore sane diversa. Three examples of this apparently new Heterocercus are in the collection. Judging from its near ally, H. fiavivertex of Pelzeln, of which two species are in Sclater's collection, they are all males, as in the females of the last-named species the coloured vertical crest is wanting. The tail is of the same abnormal construction as in the two other species of this genus. The feathers are rather stiffened and curve outwards towards their extremities ; the three outer pairs of rectrices are rapidly shortened and diminished in breadth, the outer pair only measuring about 1 inch from their insertion. |