POLYTMUS L 1B UE) ORRH OU S, Selater & Salvin White-vented Golden-throat. Polytmus leucorrhous, Sclater & Salvin, Proc. Zool. Soc. 1867, p- 584 (ex Gould, MSS.).—lid. tom. cit. p. 752.—Gould, Proc. Zool. Soc. 1871, p. 505.—Sclater & Salv. op. cit. 1873, p. 288.—Elliot, Synopsis of the Humming-Birds, p. 215 (1878).— Tacz. Orn. du Pérou,1i p. 373 (1884). Polytmus leucoproctus, Gray, Hand-list of Birds, i. p. 128, no. 1626 (1869). Chrysobronchus leucorrhous, Sclater & Salvin, Nomencl. Av. Neotr. p. 89 (1873).—Mulsant, Hist. Nat. Oiseaux-Mouches, i. p. 281 (1875).—Eudes-Deslongchamps, Ann. Mus. d’Hist. Nat. de Caen, i. p. 446 (1880). For our knowledge of the existence of this species we are indebted to the researches of Mr. A. R. Wallace and Mr. Edward Bartlett, the former having obtained examples at Babati, on the Rio Negro, and the latter on the river Huallaga in Eastern Peru. It is most nearly allied to the Polytmus viridissimus of this Monograph (see vol. 1. Introduction, pl. Ixxxv., and vol. iv. p. 231, and 8vo edition of Introduction, p. 127), but differs from that well-known bird in its under tail-coverts being pure white. The specific appellation assigned to it first appeared in Messrs. Sclater and Salvin’s “ List of the Birds collected by Mr. Wallace on the Lower Amazon and Rio Negro,” and subsequently in the same gentlemen's E. Bartlett on the river Huallaga, Eastern Peru.” en, with the exception of the head, which is brown, brown; tail bright green ; bill “Catalogue of Birds collected by Mr. Male. Entire upper and under surface pale flowery gre wing-coverts golden green ; wing : tail 3, tarsus vs. pt that the three outer tail-feathers on and the crissum, which is white ; purplish light fleshy brown. Total length 32 inches, bill #, wing 2:, Female. Much smaller than the male, but similarly coloured, exce eee each side are tipped with white, like those of the female of Polytmus viridissimus. [R. B. 8.] Lo. CAKO L Ave