BIRDS or NORTH AND MIDDLE AMERICA. 785 



Immature imale. — Similar to the adult female, but with scattered 

 bright-colored feathers indicating the final assumption of the adult 

 plumage. 



Southwestern Costa Rica (Pozo Azul de Pirris ; Pigres) and w^estern 

 Pacific slope of Panama (Bogaba). 



Cotmga amabilis ? (not Cotinga amabilis Gould) Salvin, Proc. Zool. Soc. Lond., 

 1870, 200 (Bugaba, Panama). 



Cotinga ridgivayi '"Zeledon, MS." Ridgway, Proc. U. S. Nat. Mus., x, Apr. 

 25, 1887, 1, pi. 6, fig. 3 (Pozo Azul, w. Costa Rica; coll. U. S. Nat. Mus.).— 

 ScLATER, Cat. Birds Brit. Mus., xiv, 1888, 384 (Bugaba, Panama). — Salvin 

 and GoDMAN, Biol. Centr.-Am., Aves, ii, 1890, 139.— Bangs, Proc. New Engl. 

 Zool. Club, iii, 1902, 41 (Bogaba, Panama). 



[Cotinga] ridgwayi Sharpe, Hand-list, iii, 1901, 174. 



COTINGA NATTERERII (Boissoneau). 

 NATTEEEE'S COTINGA. 



Similar to C. ridgwayi, but adult male with form and relative 

 length of outer primaries very different, the ninth much longer than 

 the tenth (outermost), sometimes as long as eighth, the ninth and 

 eighth distinctly widened (instead of contracted) terminally; middle 

 of throat and upper chest narrowly barred with black; blue band 

 across breast broader, and purple abdominal area barred (mostly 

 beneath the surface) with black or greenish black. 



Adult male. — Above rich, bright blue (nearest cerulean or sevres), 

 changing to yellowish green (except on head and neck) when viewed 

 from the light, to more purplish blue (cobalt or ultramarine) when 

 viewed toward the light, the color deeper on pileum; feathers of 

 upper parts black immediately beneath the surface, this inclosing 

 a basal area of gray, the black showing wherever the feathers are 

 disarranged and permanently on scapulars; tail black, the rectrices 

 (except outermost) narrowdy edged w^ith blue; lesser and middle wing- 

 coverts bright blue, black basally (this conspicuously exposed on 

 middle coverts) ; rest of wing black, the greater coverts and second- 

 aries edged with blue; a black orbital ring, broadest in front of eye; 

 a black line along lower and anterior margin of forehead, from rictus 

 to base of culmen; chin blue, slightl}'^ intermixed wdth blackish; 

 malar region, low^er edge of auricular region, whole throat, and upper 

 chest very dark or blackish purple (more bluish than prune purple), 

 the median portion (broadly) of this dark purple area narrowly 

 barred with black; a large spot on lower breast deep auricula purple, 

 .fading into mauve-purple on abdomen, the feathers of this purple 

 area narrowly barred (mostly beneath surface) with black or dusky 

 green; rest of under parts bright rich blue, like upper parts, the 

 feathers similarly marked with black and gray beneath surface; 

 axillars and under wing-coverts greenish black margined with bluish 



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