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Show 1867.] THE BIRDS OF THE LOWER AMAZONS. 585 great interest as indicating the correct locality of this Humming-bird, which was unknown to M r . Gould. The under surface of the present specimen is sordid white, with slight marginations of bluish green in some of the feathers. The upper tail-coverts retain tbe characteristic bronzy colouring of the male bird. Fam. CUCULIDA. 188. CROTOPHAGA ANI, Linn. Mexiana. 189. CROTOPHAGA MAJOR, Linn. Capim River. 190. GUIRA PIRIRIGUA (Vieill.). Mexiana. 191. DIPLOPTERUS NAVIUS (Linn.). Mexiana. 192. PIAYA CAYANA (Linn.). Para. 193. PIAYA MINUTA (Vieill.). Para. Fam. OPISTHOCOMIDA. 194. OPISTHOCOMUS CRISTATUS. Para. " This bird abounds on the low shores of the river between Para and the Tocantins. It is found in small flocks of from ten to twenty individuals, and feeds on the leaves of the Arum arboreum, with which its stomach is generally loaded. This gives it a very disagreeable odour. Nothwithstanding its large wings, its flight is slow and laboured. It is never seen on the ground or in high trees, but principally sitting upon the Arum. When alarmed it throws up its crest exactly in the same manner as the Guira."-A. W . Fam. RAMPHASTIDA. 195. RAMPHASTOS TOCO. "Obtained in Mexiana, but not known at Para."-A.W. 196. RAMPHASTOS ERYTHRORHYNCHUS, Gm. Para. 197. RAMPHASTOS OSCULANS, Gould. Upper Rio Negro. 198. RAMPHASTOS ARIEL, Vig. Para. |