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Show 144 MR. SCLATER ON THE AMERICAN CAPRIMULGIDcE. [Feb. 27, fere pari longitudine, sept. oct. et nono longissimis, decimo fere dimidio breviore. . 2 • Remigibus fuscis, rufo fasciatis ; quatuor externis fere arqua-libus et longissimis. Hab. Interior of Brazil; Mattogrosso, Goyaz, Ypanema, Cimiterio, Curytiba, Ytarare, and Irisanga (Natt.). Herr von Pelzeln has lately shown (I. c.) that the very abnormal form of the wing in this bird is peculiar to the male sex. Mr. Gould's original specimen of this bird is now in the British Museum. Besides the examples of this scarce bird mentioned by Herr von Pelzeln, I have seen it in the private collections of Mr. Eyton and of the late Baron de la Fresnaye. Subsect. B. Terricolar: tarsis elongatis, implumibus; rostro di-latato. Genus 8. N Y C T I D R O M U S . NYCTIDROMUS ALBICOLLIS. Caprimulgus albicollis et C. guianensis, G m . S. N. i. p. 1030. Nyctidromus americanus, Cassin, Pr. Ac. Phil. 1851, p. 1 79 ; Cab. & Hein. Mus. Hein. iii. p. 92 ; Scl. & Salv. Ibis, 1859, p. 125 (nee C. americanus, Gm.). Nyctidromus guianensis, N. albicollis, N. derbyanus, N. gralla-rius, et N. affinis, auctt. var. S • Rectricum pari tertio et quarto (a medio) fere omnino albis. 2 • Rectricum pari tertio et quarto nigris, fulvo transvittatis, apicibus albescentibus. Hab. Whole of Central and Southern America west of the Andes, from Southern Mexico (Xalapa, Salic) to Southern Brazil; very common in British Guiana (Schomb.) ; Vera Paz, common (Salvin); Upper Ucayali (Bartlett) ; common in collections from Bogota. Messrs. Cabanis and Heine have given a long list of the many synonyms of this species (/. s. c ) , which I believe to be quite correct (with the exception of Capr. americanus, Gm., which belongs to Siphonorhis) and need not now repeat. I agree with these gentlemen in considering that all the specimens met with from the various localities mentioned above are referable to one species. The South- Brazilian specimens (N. derbyanus) are generally larger ; but in Mr. Salvin's extensive series of skins of this bird from the Vera Paz some of the males are quite as large. Bogota skins, on the other hand (N. grallarius), are usually rather small. Genus 9. SIPHONORHIS. 1. SIPHONORHIS AMERICANA. Caprimulgus jamaicensis, Briss. Orn. ii. p. 480. C. americanus, Linn. S. N. i. p. 346. Siphonorhis americanus, Sclater, P. Z. S. 1861, p. 77, et Am. Cat. p. 282. Hab. Jamaica (Osburn). |