BIRDS OF NORTH AND MIDDLE AMERICA. 657 



inner toe about as long as middle toe, the outer slightly shorter. 

 Wing more than four to more than five times as long as exposed 

 culmen, the outermost primary longest, strongly incurved and broadly 

 rounded terminally. Tail three-fifths to nearly two-thirds as long 

 as wing, slightly rounded in adult males, more strongly rounded, 

 with middle rectrices usuall}^ shorter than second pair, in adult 

 females, the rectrices rather broad, rounded terminally. 



Coloration. — Adult males with pileum, including occipital crest, 

 brilliant metallic green (the crest more bluish terminally) or the crest 

 metallic blue or violet (at least in part); rest of upper parts rather 

 dark metallic green, the tail purplish black; under parts sooty black- 

 ish, passing into sooty gray on chin and tln-oat. Adult females and 

 young bronze-green above, including middle rectrices, gray beneath; 

 lateral rectrices purplish black, more or less bronzy or greenish basally, 

 tipped with gray. 



Range. — Lesser Antilles; island of Tobago. (Three species, or 

 subspecies.) 



This genus is so evidently closely related to Clirysolampis that it 

 is difficult to understand why they should be so widely separated in 

 most classifications of the group. 



KEY TO THE SPECIES AND SUBSPECIES OP ORTHORHYNCUS. 



a. Pileum and pointed occipital crest brilliantly metallic. {Adult males.) 



h. Occipital crest green or mostly green, like crown and forehead. {Orthorhyncus 

 exilis.) 

 c. Occipital crest very faintly, if at all, tinged with blue at tip. (Porto Rico, 

 St. Thomas, etc., of Greater Antilles, and Lesser Antilles except St. Vincent, 

 Barbados, Grenada, and Grenadines.) 



Orthorhyncus exilis exilis, adult male (p. 658). 

 cc. Occipital crest distinctly blue terminally. (St. Vincent.) 



Orthorhyncus exilis ornatus, adult male (p. 661). 

 bb. Occipital crest (abruptly) violet or \-iolet-blue. {Orthorhyncus cristatus.) 

 c. Crest more decidedly violet; throat darker gray. (Barbados.) 



Orthorhyncus cristatus cristatus, adult male (p. 662). 

 cc. Crest more bluish violet to violet-blue; throat paler gray. (Grenada and 



Grenadines) Orthorhyncus cristatus emlgrans, adult female (p. 664). 



aa. Pileum metallic green (not brilliant); no crest. 



6. Under parts of body dark sooty; lateral rectrices without distinct gray tip. 



{Immature males.)'^ 

 bb. Under parts of body gray. {Adult female s.)<^ 



o I am unable to give characters for certain identification of immature males and 

 adult females. 



81255°— Bull. 50—11 42 



