I 



iv, 



There are five well-marked species of this genus, each of which appears to inhabit a 

 different region, namely : — 



a. Sp. ventre transfasciato : rostro nigricante. 



1. X albkollis (Vieill.) of S. E. Brazil. 



2. X promeropirJiynchus (Less.) of New Granada, Ecuador, Peru and Bolivia, 



I. Sp. ventre concolore : rostro albicante. 



3. X. procerus, Cab. et Hein. of Venezuela. 



4. X emigrcms, Scl. et Salv. of Mexico and Guatemala. 



5. X major (Vieill.) of Paraguay and Bolivia. 



For the synonymy of these birds we refer our readers to Sclater's American Catalogue. 

 Dendrocolaptes perroti, of Lafresnaye, which has been hitherto placed in this genus, is very 

 aberrant in the shape of its bill, and may, we now think, be better arranged along with 

 Dendrocolaptes temmincki, Lafr., in the genus Dendrexetastes, Eyton. 



Decembee, 1867. 



[?2] 



