1917.] Chapman, Distribution of Bird-life in Colombia. 269 



was described as having spatulate central rectrices (a character unknown 

 in specimens from east of the Andes), makes it more than probable that 

 Leadbeater's type did not come from "Brazil" as he stated. If, following 

 Ridgway (Bull. 50, VI, p. 471), we did not accept this view of the case, 

 pyrrholwmus (Berl. & Stolz.) shown by Hellmayr to be the Brazilian form, 

 would become a synonym of platyrhynchus, leaving the broad-billed race of 

 western Ecuador without a name. In view of the facts stated and of the 

 action of previous authors this proceeding seems to me to be unnecessary. 



Hellmayr states that in fourteen adult specimens of platyrhynchus and 

 minor all have the central rectrices spatulate, but in our eighteen specimens 

 of these forms two adults have the vanes of the central rectrices entire and 

 in a third they are nearly so. 



■San Jose, 1; Alto Bonito, 2. 



(907) Electron platyrhynchus pyrrholaemus {Berl. & Stolz). 



Prionirhynchus platyrhynchus pyrrholoemus Berl. & Stolz., P. Z. S., 1902, p. 35 

 (La Merced, cen. Peru). 



An adult male from Florencia has the central rectrices fully developed 

 (see measurements beyond) and non-spatulate; both this character and 

 the locality indicate that it should be referred to this form, of which, how- 

 ever, I have no authentic specimens. Aside from the non-spatulate rec- 

 trices, which appear to characterize this form, it may be distinguished from 

 platyrhynchus by its shorter and narrower bill, while the specimen below 

 recorded has the tail bluer terminally than any of our eighteen specimens 

 from west of the Andes. 



Florencia, 1. 



(907a) Electron platyrhynchus minor (Hart). 



Prionirhynchus platyrhynchus minor Hart., Nov. Zool., V, 1898, p. 498 (Panama). 

 ■Prionirhynchus platyrhynchus Scl. & Salv., P. Z. S., 1879, p. 534 (Remedios). 



It is difficult to understand why four specimens from Puerto Valdivia 

 on the lower Cauca River, at the eastern base of the Western Andes, should 

 be referable to the Panama form rather than to E. p. platyrhynchus which 

 occurs on the opposite or western slope of the Western Andes, at Alto Bonito. 

 In color these specimens are nearer to Pacific coast birds than to Panama 

 birds, in general size, taking Hartert's measurements of platyrhynchus (see 

 table beyond) for comparison, they are about intermediate between platyr- 

 hynchus and minor, but in the size of the bill they agree with the latter and 



