72 



mitted the additional error of transforming the name ruficervix there 

 given into rufivertex. In this he has heen followed by several authors, 

 who did not choose to trouble themselves by referring to the original 

 work. Prince Charles Bonaparte first pointed out these mistakes in 

 his ' Note sur les Taugaras ' in the ' Revue et Magasin de Zoologie ' 

 for 1851 ; and on account of the " heureuse inadvertence,'' as he calls 

 it, by which the wrong name was quoted for the Iridornis, suggests 

 the continuance to that bird of the specific term rufivertex, in which 

 however he has not been followed by subsequent writers. 



In the ' Comptes Rendus' for the same year, the Prince seems to 

 consider this bird the same as Procnopis atroccerulea of Tschudi 

 (the last species), which is not the case. 



The Calliste ruficervix is common in collections from Bogota, and 

 extends down the valleys of the Andean ranges as far as the vicinity 

 of Quito, where M. Bourcier obtained specimens. Supposing, from 

 Prince Bonaparte's description of these examples, that they belonged 

 to a species different from that of the Bogota bird, I formerly founded 

 upon them the name Calliste leucotis. In this I was in error, for 

 on examination of M. Bourcier's type in the French National Col- 

 lection, I found it to be the same as the New Grenadian species. 



