POLYTMUS LEUC0RRH0U8, Selater * SaM.. 



White-vented Golden-throat. 



Pohjtmus leucorrhous, Sclater & Salvin, Proc. Zool. Soc. 1867, p. 584 (ex Gould, MSS.).— lid. 



torn. 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 Perou, i p. 373 (1884). 

 Polytnms leucoproctus, Gray, Hand-list of Birds, i. p. 128, no. 1626 (1869). 

 Chrysohronchus leucorrhous, Sclater & Salvin, Nomencl. Av. Neotr. p. 89 (1873).— Mulsant, 



Hist. Nat. Oiseaux-Mouches, i. p. 281 (1875).— Eudes-Deslongcliamps, Ann! 



Mus. d'Hist. Nat. de Caen, i. p. 446 (1880). 



For onr knowledge of the existence of this species we are indebted to the researches of Mr. A. R. Wallace 

 and Mr. Edward Bardett, the former having- obtained examples at Babati, on the Rio Negro, and the latter 

 on the river Hnallaga in Eastern Peru. It is most nearly allied to the Polytmus viridismnus of this 

 Monograph (see vol. i. Introduction, pi. Ixxxv., and vol. iv. p. 231, and 8vo edition oflntroduction, p. 127), 

 but differs from that well-known bird in its under tail-coverts being pure white. 



Hie specific appellation assigned to it first appeared in Messrs. Sclater and Salvia's " List of the Birds 

 collected by Mr. Wallace on the Lower Amazon and Rio Negro," and subsequently in the same gentlemen's 

 "Catalogue of Birds collected by Mr. E. Bartlett on the river Huallaga, Eastern Peru." 



Male. Entire upper and under surfice pale flowery green, with the exception of the head, which is brown, 

 and the crissum, which is white ; wing-coverts golden green ; wing purplish brown ; tail bright green ; bill 

 light fleshy brown. Total length 31 inches, bill I, wing 2i tail i tarsus A. 



Female. Much smaller than the male, but similarly coloured, except that the three outer tail-feathers on 

 each side are tij)ped with white, like those of the female o^ Polytmus vmd'mimus. 



[R. B. S.] 



