108 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



KEY TO THE 8PECIES AND SUBSPECIES OF RAMPHOCELUS. 



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

 I). Under jjarts of body entirely black. 

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

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



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



(/(/. Larger (wing averaging 79.0). (Southwestern Costa Rica.) 



Ramphocelus costaricensis, adult male (p. Ill) 

 cc. Lower back, rump, and upper tail-coverts yellow or orange. 

 d. Rump, etc., orange. 

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



Ramphocelus chrysonotus, adult male (extralimital) (p. 112') 

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



Ramphocelus chrysopterus, adult male (p. 112) 

 dd. Rump, etc., lemon j^ellow. (Isthmus of Panama to Ecuador.) 



Ramphocelus icteronotus, adult male (p. 113) 

 bb. Under parts of body partly red or yellow. 



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



Ramphocelus 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.) 



Ramphocelus festae, adult male (]>. 115) 

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

 color; under partj^ 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. LTnder parts of body scarlet ("orange-crimson") anteriorly, passing 

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

 ui:)per tail-coverts white. (Isthmus of Panama?) 



Ramphocelus dunstalli, adult male (p. 115) 

 yg. Under parts of bo<iy blood-red or orange-red laterally, black medi- 

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

 white, and gray, successively. 

 //. 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.) 



Ramphocelus luciani, adult male (p. 115) 

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

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

 Ramphocelus melanogaster, adult male (extralimital) (p. 116-^) 

 ff. Back crimson-maroon, like liead, neck, and chest. {Ramphocelus dimi- 

 diutn.^, 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.) 



Ramphocelus dimidiatus dimidiatus, 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. 



