( 296 ) 
[Mus. Goeldi (Parad), No. 3540. ~?, Monte Verde, Rio Parts, 25. vi. 1904.— 
Wing 573; tail 48; bill 11 mm.] 
The two specimens agree with the typical series from Borba in the coloration 
of the lower parts and in the olive-yellow loral streak, but differ by their decidedly 
brighter, pure grass-green (instead of yellowish green) upper surface. In this 
respect they approach Ft. f. viridiceps* from North Peru (Pebas) and Eastern 
Ecuador (Napo). The latter, however, has the throat and chest distinctly light 
green like the sides, not clear olive-yellow as R. f. borbae. From both forms, 
RR. f. flaviventris, of Eastern Brazil, etc., differs by having the lower parts, 
especially the throat and chest, much deeper, gamboge-yellow ; the loral streak 
more clearly defined, rusty yellow or orange; and the upper wing-coverts more 
conspicuously edged with clear yellow. 
Characters and range of the three races are as follows :— 
(a) R. flariventris flavicentris (Wied). 
Hab. Eastern Brazil: Southern Bahia (Alcobaca, Muecnri), Goyaz (Rio 
Araguaya), Tocantins (Arumatheua), Tapajéz (Goyana).t N.E. Brazil: Forte do 
Rio Branco (Natterer). British Guiana, Venezuela, Trinidad, Tobago. North 
Colombia (Santa Marta). 
Adult. Upper parts bright yellowish green ; median and greater upper wing- 
coverts with well-defined, broad edges of deep olive-yellow. Lores and eyelid deep 
rusty yellow or dull orange, conspicuously contrasted with the green of the crown 
and yellowish green of the cheeks, etc. Under parts deep gamboge-yellow, throat 
and chest often tinged with dull ochraceous. 
Wing 55—62 ; tail 47—55 mm. 
Examined fifty-one specimens from Brazil, Brit. Guiana, Venezuela, Tobago, 
etc. Specimens from the Tapajéz and Tocantins Rivers are clearly referable to 
R. f. faviventris, though some of them slightly point towards R. f. borbae. 1 
am indebted to Miss Snethlage for the loan of the series contained in the Parad 
Musenm. ; 
(6) R. flaviventris borbae Hellm. 
Hab, W. Brazil; Borba, Marmellos, on the Rio Madeira (Natterer, Hoffmanns) ; 
Monte Verde, Rio Purds (Mus. Goeldi), 
Adult. Upper parts less yellowish green, sometimes (in Marmellos and Parts 
examples) even pure grass-green. Median wing-coverts edged with green, like 
the back ; greater ones with narrow, ill-defined, greenish yellow margins. Narrow 
loral streak dull olive-yellow, rarely distinctly rusty yellow (in two from Borba). 
Under parts pale olive-yellow, slightly darker on throat and chest. 
— Wing 55—59 ; tail 47—50 mm. 
Examined: five adults from Borba, including the types; one each from 
Marmellos and Monte Verde, Parts, 
(¢) R. flaviventris viridiceps Scl. & Salv. 
Hab, North Pern: Pebas (Hauxwell ; type), Eastern Ecuador: Rio Napo 
(Petit). [Central Pera: La Merced, Chanchamayo (Kalinowski). ] 
Adult. Loral streak and upper wing-coverts as in R. J. borbae, but upper parts 
* R. viridiceps Sclater & Salvin, Proc. Zool. Soc. Lond. 1873, p- 280 (Pebas, N. Peru). 
’ Snethlage, Journ. f. Orn. 1908. pp. 503, 527, 
