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BULLETIN 5 0, UlSnTED STATES NATIONAL MUSEUM 



length of maxilla, sometimes nearly to its tip ; nostril narrowly linear, 

 longitudinal, posteriorly in contact with loral feathering, overhung by 

 a thin but rather broad membraneous operculum ; loral antia decidedly 



Figure 16. — Eurypyga helias. 



anterior to malar antia but more or less posterior to mental antia ; a 

 narrow naked space on lower eyelid and, in E. helias, the postocular 

 region more or less naked. Wing relatively large and broad, the 



