108 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



KEY TO THE SPECIES AND SUBSPECIES OF RAMPHOCELUS. 



a. Wings and tail black. (Adult males. ) 

 b. Under parts of body entirely black, 

 u. Lower back, rump, and upper tail-coverts scarlet. 

 d. Smaller (wing averaging 74.9). (Southeastern Mexico to Isthmus of 



Panama. ) Bamphocelus passerinii, adult male (p. 109) 



dd. Larger (wing averaging 79.0). (Southwestern Costa Eica.) 



Bamphocelus costariceuBis, adult male (p. Ill) 

 ce. Lower back, rump, and upper tail-coverta yellow or orange. 

 d. Rump, etc., orange, 

 e. Under wing-coverts black. (Colombia.) 



Bamphocelns ohrysonotus, adult male (extralimital) (p. 112') 

 ee. Under wing-coverts orange?'' (Isthmus of Panama.) 



Eamphooelus ohrysopterus, adult male (p. 112) 

 dd. Eump, etc., lemon yellow. (Isthmus of Panama to Ecuador.) 



Bamphocelus icteronotus, adult male (p. 113) 

 66. Under parts of body partly red or yellow, 

 c. Under parts, except chin, abdomen, and thighs, yellow. ( Isthmus of Panama. ) 



Bamphocelns inexpectatus, adult male (p. 114) 

 cc. Under parts, except chin, throat, chest, and abdomen, red, or else black 

 with a red band across chest. 

 d. Head and neck velvety black without any reddish tinge; under parts black 

 with a red band across chest and the anal feathers red. (Chiriqui.) 



Bamphocelns festee, adult male (p. 115) 

 dd. Head and neck dark garnet red, or at least tinged or washed with that 

 color; under parts mostly red. 

 e. Red feathers of rump and under parts and tail-coverts without central 

 spots of black. 

 /. Back black or but slightly tinged with dark garnet red. 



g. Under parts of body scarlet ("orange-crimson") anteriorly, passing 

 into rufous-orange posteriorly; basal half of feathers of rump and 

 upper tail-coverts white. (Isthmus of Panama?) 



Bamphocelns dunstalli, adult male (p. 115) 

 gg. Under parts of body blood-red or orange-red laterally, black medi- 

 ally; basal half of feathers of rump and upper tail-coverts yellow, 

 white, and gray, successively. 

 h. Rump, tail-coverts, and lateral under parts orange-red or scarlet; 

 throat and chest dark brownish red, the first sometimes nearly 

 black. (Isthmus of Panama to northeast coast of Colombia.) 



Bamphocelns Inciani, adult male (p. 115) 

 hh. Rump, tail-coverts, and lateral under parts bright poppy red or 

 blood red; throat and chest crimson-maroon. (Eastern Peru.) 

 Bamphocelns melanogaster, adult male (extralimital) (p. 116") 

 ff. Back crimson-maroon, like head, neck, and chest. {Samphocelm dimi- 

 diatus, adult male.) 

 g. Abdomen extensively and distinctly black or dusky; general colora- 

 tion darker; greater wing-coverts entirely black. 

 h. Colors brighter, the abdomen deep black; tail shorter (averaging 

 69.0) . (Colombia north to coast of Chiriqui.) 



Bamphocelns dimidiatns dimidlatns, adult male (p. 116) 



' Footnote. 



^ The original description of this supposed species is so vague that, in the absence 

 of specimens, it is almost impossible to tell what its characters really are. 

 ° In text and in footnote. 



