Page 5, 
ERRATA ET ADDENDA. 
No. 6.—For “ californicus’”’ read “ californianus.”’ 
Gen. VI. add: Type by monotypy Falco serpentarius Miller. 
Page 8, No. 13.—In description, line 2, for “‘ back’’ read ‘‘ black.” 
Page 9, No. 14b.—For 
“ce 
Gymnogyps ’’ read “‘ Pseudogyps.”’ 
Page 12, No. 21.—For distribution read: ‘‘ Northern S. America ’’ only. 
y, 
2Iaa. 
After this article add: 
Polyborus cheriway auduboni Cass. Pr. Philad. Acad. 
1865, p. 2. [Texas.] 
Larger ; wing g 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 :— 
For description read : 
Wing ¢ 296, Y 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. 
Page 15, No. 30a.—For distribution read :— 
30b. 
For ‘“‘ Not seen ’’ read : 
Wing g 300 mm.; above browner than in M. c. 
strigilatus ; head and under parts, especially under 
side of wings, warm buff instead of white; base of 
primaries with narrow blackish bars. 
After this article add: 
Milvago chimachima strigilatus Spix., Av. Bras., i., 
p. 1o and pl. [juv.] (1838). [River Xingu] 
White-breasted Caracara. 
Smaller; wing ¢@ 265, Y 280-290 mm.; above 
blacker ; basal half of primaries pure white, without 
bars ; head and hind neck buffish white ; upper tail- 
coverts and basal two thirds of tail white, the bars 
more or less obsolete ; below pure white. 
S. United States, 
Cuba, Mexico, and 
Central America. 
Paraguay, 
N. Argentina (Chaco 
dist.), S. Brazil. 
Panama, Colombia 
to Brit. Guiana. 
E. and Central 
Brazil, N. to 
Amazonia. 
