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XX. Description of a new Species of the Genus Buteo /roni Mexico. 

 By Philip Lutley Sclater, M.A., F.L.8., Sfc. 



ReadJuly 13, 1858. 



Mr. J. H. GURNEY has requested my attention to a specimen of a species of the 

 genus Buteo belonging to the Norwich Museum, which I now exhibit. It was formerly 

 in the collection of this Society, and was originally received along with other birds from 

 the State of Tamaulipas, in Northern Mexico, by Mr. Gould. I have never seen any 

 other bird quite resembhng it — the nearest ally known to me being the Buteo albono- 

 tatus of G. R. Gray, from which, however, on comparison, it appears to be perfectly 

 distinct. I agree with Mr. Gurney in considering it as probably undescribed ; and in 

 allusion to its nearly uniform sooty-black plumage, propose to characterize it as 



Buteo fuliginosus, sp. nov. (PI. LXII.) 



Saturate fuliginoso-hrunneus unicolor ; capite, dorso medio et alarum primariis extus 

 paulo nigricantioribus : primariorum et secundariorum vexillis internis subtus albis, 

 sex aut septem vittis nigris transversim notatis ; tectricibus alarum inferioribus nigro- 

 brunneis : cauda supra fuliginoso-brunnea, vittis quinque aut sex nigris obsolete trans- 

 fasciata et nigro late terminata ; cauda subtus alba et vittis dilutioribus : rostra 

 nigro, pedibus Jlavis. 



Long, tota 15-5, alse 120, caudae 6-5, tarsi 26. 



Hab. In Mexico Boreali. 



