vi PREFACE TO THE SECOND EDITION. 
parent difficulty or “hitch” is now met, for the diagnostic characters 
of the different species are very obvious only in the adult males. A 
careful consultation of the characters of the adult female and young 
male following “c',” “c’,” and “3°,” in connection with the length 
of the culmen and the known locality, results, however, in the final 
determination of the species as PLaTypsaRis aGLALZ (Lafr.). Rosr- 
THROATED BECARD. 
The measurements of eggs have been revised with the assistance 
of Major Bendire, the corrections made being based upon the measure- 
ment of a much larger number of specimens than were measured 
before. 
ROBERT RIDGWAY. 
Unitep States Nationat MusEvum, 
September 20, 1895. 
