Ridgway — Diagnoses of New Genera of American Birth. 101 



pileatus Scopoli) in having the l>ill relatively much narrower, with max- 

 illa compressed laterally, its width at base equal to luit little mure than 

 half the length (chord) of gonys and much less than three-fourths the 

 length (chord) of culmen ; maxillary tomium without distinct, if any, 

 post-ungual notch or " tooth " ; base of mandible beneath narrowly and 

 deeply concave ; tenth ( outermost ) primary equal to seventh ; lores densely 

 feathered; auricular feathers narrow, somewhat elongated; tail dusky 

 blue distally, dusky red proximally, and sexes alike in color. 



('A7ra\6s, delicate; v^tt-cU^, a parrot. ) 



Species: Hapalopsittaca amazonina (Des Mnrs). 



