Errata et Addenda. 



Page 5, No. 6.^For " californicus " read " calif ornianus.'' 



Gen. VI. add : Type by monotypy Falco serpentanus Miller. 



Page 8, No. 13. — -In description, line 2, for " back" read "' black." 



Page 9, No. 14b. — For " Gymnogyps " read " Pseudogyps." 



Page 12, No. 21. — For distribution read: "Northern S. America" only. 



After this article add : 



2iaa. Polyborus chenway auduboni Cass. Pr. Philad. Acad. S. United States, 

 1865, p. 2. \Texas.'] Cuba, Mexico, and 



Central America. 

 Larger ; wing (J 390-400 mm. (as against 360 mm. 

 in S. American form) ; plumage browner ; under 

 tail-coverts white, with a few dark bars only. 



Page 15, No. 30. — For distribution read : — Paraguay, 



N. Argentina (Chaco 

 For description read : dist.), S. Brazil. 



Wing (J 296, ^ 295-305 mm. ; above blackish brown, 

 with slight paler edgings ; behind eye each side a 

 black stripe ; head and hind neck buff, streaked 

 with pale brown ; upper tail-coverts and basal two- 

 thirds of tail buffish white, with about 7 blackish 

 bars on tail ; apical third of tail black ; below deep 

 to pale ochraceous buff according to age. Juv. : 

 head, neck and under parts dark brown, latter heavily 

 striped with whitish. 



Paup I ■; No ^oa. — -For distribution read : — Panama, Colombia 



^ 3' ■ -^ to Brit Guiana. 



For " Not seen " read : 



Wing (J 300 mm. ; above browner than in M. i,. 

 strigilatus ; head and under parts, especially under 

 side of wmgs, warm buff instead of white ; base of 

 primaries with narrow blackish bars. 



After this article add : 



^ob Milvago chimachima strigilatus Spix., Av. Bras., i., E. and Central 



■ p 10 and pi. [juv.] {1838). [River Xingii.-] Brazil, N. to 



White-breasted Caracara. Amazoma. 



Smaller; wing (J 265, ^ 280-290 mm.; above 

 blacker ; basal half of primaries pure white, without 

 bars ; head and hind neck bufi&sh white ; upper tail- 

 coverts and basal two thirds of tail white, the bars 

 more or less obsolete ; below pure white. 



