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Show 418 MESSRS. SCLATER AND SALVIN [ June 10, Nigerrima : campterio toto et tectricum alarium marginibus, necnon remigis primi limbo angusto, albis: rostro et pedibus nigricanti-plumbeis, illo versus apicem albicante : long, tota 6*0, alee 3*2, caudce 2*8, tarsi 1*3, rostri a rictu 10. Hab. in Costa Rica et in rep. Honduratensi. Obs. Similis G. nudicipili, sed campterio toto albo et rostro validiore insignis, et plaga dorsi ad basin plumarum alba valde minore. Upon comparing Arce's specimens of Gymnocichla collected at Tucurriqui with Panama skins of G. nudiceps, we find that the\ belong to different species, of which we have pointed out the characters above. W e have therefore selected the name chiro/eu.a for the present bird, as expressing one of its most noticeable characters, the pure whiteness of the bend of the wing. W e have also, through Mr. Moore's kindness, had an opportunity of reexamining the bird collected by Leyland at Omoa, in Honduras, and named by him Cr. nudiceps, in his list of Leyland's collection (Proc. Zool. Soc. 1859, p. 55), and find it also belongs to the present species. Mr. Moore notes that the bareness of the head in his specimen is only partial; and this is likewise the case in the Costa-Rican example. The denudation only extends, over the top of the head, rather further than a line joining the eyes, but embraces the whole space immediately round the eyes. In the adult G. nudiceps (as is shown in Cassin's figure, Pr. Acad. Sc. Phil. v. p. 10G, t. 6) the whole summit of the head is bare. 4. GRALLARIA PRINCEPS, sp. nov. Grallaria yuatemalensis, Salvin, P. Z. S. 1867, p. 146. Supra ofeayinea, plumis nigro marginatis ; pileo et collo postico valde obscurioribus et cineraceo tinctis; loris et oculorum am-bitu rufescentibus : alis obscure fuscis, extus et intus castaneo limbatis: cauda omnino fuscescenti-castanea : subtus saturate ferruginea, pectore paulo obscuriore, gutturis medii plumis nigro variegatis: rostro obscure corneo, mandibulee basi albicante; pedibus corylinis : long, tota 6*5, alee 4*3, caudce 1*7, tarsi 1*9, rostri a rictu 1*3. Hab. in Veragua (Arce). Obs. Similis G. guatemalensi, sed rostro robustiore, altiore, colore corporis superi obscuriore, ventris autem rubiginoso saturatiore distinguenda. The receipt of a second and more adult specimen of this Grallaria from Veragua has enabled us to distinguish it from its northern ally, to which Salvin had previously referred it with some hesitation. It is still more different from G. regulus of Western Ecuador, which is smaller and much less deeply ferruginous below. The present species makes the sixth of the group allied to G. rex, which are thus distributed :- 1. G. imperator, ex Brasilia. 2. G. rex, ex Guiana. 3. G. regulus, ex iEquator. occidentali. |
