392 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



c. Throat black; under wing-coverts gray. (Damis cayana.) 

 d. General color bright cerulean or turquoise blue, changing to bluish green; 

 throat deeper black. ( Colombia to southern Brazil and Bolivia; Chiriqui?) 



Dacnis cayana cayana, adult male (p. 392) 

 dd. General color bright ultramarine or cobalt blue, changing to greenish blue; 

 throat dull greenish black. (Isthmus of Panama to Nicaragua. ) 



Dacnis cayana nltramarina, adult male (p. 394) 

 cc. Throat bluish green; under wing-coverts white. (Isthmus of Panama.) 



Dacnis viguieri, adult male (p. 396) 

 hh. Under parts of body greenish black; , thighs scarlet; wings entirely black. 



(Costa Rica to Colombia. ) Dacnis venusta, adult male (p. 396) 



aa. No black on lores nor back; under parts of body yellowish green, or light huffy 

 grayish anteriorly passing into buffy or buffy yellowish posteriorly. (Adult 

 females and young. ) 

 h. Under parts yellowish green, the throat bluish gray; pileum greenish blue; 

 wing-coverts, remiges, and rectrices edged with bright yellowish green, 

 c. More yellowish green, with head lighter and more greenish blue. 



Dacnis cayana cayana, adult female and young male (p. 392) 

 cc. Clearer green, with head deeper and less greenish blue. 



Dacnis cayana nltramarina, adult female and young male (p. 395) 

 56. Under parts light buffy grayish anteriorly, passing into buffy posteriorly (the 

 abdomen more yellowish); wing-coverts plain greenish gray or olive, the 

 remiges and rectrices edged with same. 



Dacnis venusta, adult female and young male (p. 897) 



DACNIS CAYANA CAYANA (Linnaeus). 

 CATENNE DACNIS. 



Adult male. — Lores, ppstocular streak (of variable extent), chin, 

 throat, and back, uniform black; wings and tail black; middle wing- 

 coverts tipped with bright greenish blue, greater coverts and tertials 

 broadly, secondaries and primaries (in part) narrowly, edged with the 

 same; rest of plumage bright cerulean or turquoise blue viewed toward 

 the light, changing to bluish green when viewed from the light; bill 

 brownish black, the mandible more brownish (fleshj^ in life) basally; 

 iris reddish brown; ^ legs and feet brownish in dried skins, fleshy' or 

 bluish' in life; length (skins), 99.6-133.6 (115.1); wing, 61.2-68.6 (65); 

 tail, 41.7-48 (44.2); exposed culmen, 11.9-14 (13.2); tarsus, 15.7-16.8 

 (16.3); middle toe, 10.2-11.4 (10.7).' 



Adult female. — Yellowish grass green, orighter on rump and upper 

 tail -coverts-, rather lighter (approaching apple green) on under parts; 

 head dull greenish blue oi' bluish green (nile blue or beiyl green), the 

 throat paler and gra}^er; lesser wing-coverts darker and duller green- 

 ish blue; bill and feet as in the male, but the former rather browner; 

 length (skins), 103.1-130.3 (116.6); wing, 57.2-68.6 (63); tail, 39.6-47 



'Forbes, Ibis, 1881, 330. 



^D'Orbigny, Voy. Am. Merid., Ois., 1839, 221. 



' Fourteen specimens. 



