8S2 



U. S. p. R. R. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



Three adult specimens of this handsome species are in the collection. 



The bill is slender, smooth on the culmen and sides ; the feathers of the wings and tack are 

 ■without the dark margins so characteristic of most of the species. 



Bonaparte makes bicristatus, Pall., to be the same as the above species, whereas Gray puts 

 bicristaius, Pall., as the synonym to P. urile, Gmelin. 



List of specimens. 



