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ZOOLOGY OF THE VOYAGE OF THE BEAGLE. 



1. BUTEO ERYTHRONOTUS. 



Haliaetus erythronotus, King, in Zoological Journal, vol. iii. p. 424. 

 Buteo tricolor, D'Orbigny. 



I obtained specimens of this bird from Chiloe and the Falkland Islands, and 

 Captain King who first described it, procured his specimens from Port Famine, 

 Lat. 53° 38' in Tierra del Fuego. M. D'Orbigny states that it has a wide range 

 over the provinces of La Plata, central Chile, and even Bolivia ; but in this 

 latter country, it occurs only on the mountains, at an elevation of about 12,000 

 feet above the sea. The same author states, that it usually frequents open and 

 dry countries ; but as we now see that it is found in the dense and humid forests 

 of Chiloe and Tierra del Fuego, this remark is not applicable. At the Falk- 

 land Islands, it preys chiefly on the rabbits, which have run wild and abound 

 over certain parts of the island. This bird was considered by Captain King as a 

 Haliaetus ; but Mr. Gould thinks it is more properly placed with the Buzzards. 

 Captain King gave it the appropriate specific name of erythronotus, and, there- 

 fore, as Mr. Gould observes, the more recent one of tricolor, given by M. 

 D'Orbigny, must be passed over. 



2. Buteo varius. Gould. 



Buteo varius, Gould, Proceedings of the Zoological Society, Part v. 1837, p. 10. 



B. vertice corporeque supra intense fuscis, plumis fulvo marginatis vel guttatis ; 

 primariis secundariisque cinereis, lineis numerosis fuscis transversim slriatis; 

 caudd cinered, lineis angustis numerosis fuscis transversim notatd ; singulis 

 plumis fiavescenti-albo ad apicem notatis ; guld fuliginosd ; pectore fulvo, lined in- 

 terruptd nigrescente a guld tendente circumdato ; abdomine imo lateribusque stra- 

 mineo et rufescenti-fusco variegatis ; femoribus crissoque stramineis lineis transver- 

 salibus anfractis rufescenti-fuscis ornatis ; rostro nigro ; cerd tarsisque olivaceis. 



Long. tot. 21-J-; alw, 16-J-j caudce, 10; tarsi, 3f. 



Colour.— Head and back of neck umber brown, with edges of the feathers 

 fringed with fulvous, (or buff orange with some reddish orange) and their 

 bases white. Shoulders brown, with the feathers more broadly edged. Back 

 the same, with the basal part of the feathers fulvous, with transverse bars 

 of the dark brown. Tail blueish gray, with numerous, narrow, transverse, 

 faint black bars. Tail-coverts pale fulvous, with irregular bars of dark 

 fulvous and brown. Wings: primaries blackish gray, obscurely barred; 

 secondaries and tertiaries more plainly barred, and tipped with fulvous. 

 Wing coverts, dark umber brown, largely tipped, and marked with large 



