312 Miscellaneous. 



of ferruginous rufous ; upon the two middle feathers these bars are 

 mottled with black. 



Young % ? Form. — Tail ample, e marinate, and regularly graduated, 

 the two external feathers being but little longer than the second. 



Dimensions. — Total length of skin, from tip of bill to end of tail, 

 about 9 inches ; wing 6^ ; tail to end of external feathers about 5 

 inches ; length of middle feathers of the tail about 4 inches. 



Colours. — Entire plumage very similar to the male, but with all 

 the tail-feathers brownish black, barred with ferruginous. 



Hab. Bogota, New Grenada. 



Obs. — The two specimens now described belong to the Rivoli col- 

 lection, and have the appearance of being either young birds, or with 

 the plumage of winter. The male may, however, be easily recognized 

 by the curious marks upon the external webs of the outer tail-feathers, 

 described above. The colours in the present specimens, black and 

 ferruginous, are peculiar to this species, so far as I have seen. 



Genus Antrostomus, Gould. 



3. Antrostomus serico-caudatus, nobis. 



Adult £ Form. — Wings rather long, third primary longest ; second, 

 third and fourth sinuated on their outer webs ; shafts slightly curved. 

 Tail cuneiform, four middle feathers equal and longest. 



Bill rather long and flat ; tarsi short, slightly feathered below the 

 knee. 



Dimensions. — Total length of skin, from tip of bill to end of tail, 

 about 1 1 inches ; wing 7\ ; tail 5 J inches. 



Colours. — Head above, back, rump, scapulars and wing-coverts 

 variegated with black and dark fulvous, the latter in rounded spots 

 and narrow irregular lines, predominating upon the wing-coverts, but 

 the former (black) upon the head and scapulars. This colour disposed 

 to form a broad longitudinal band on the head. Sides of the head, 

 over the eyes, grayish ; every feather with transverse black lines. 

 Neck behind with a semi-collar of deep reddish fulvous ; before with 

 a semi-collar of yellowish white, the feathers of which are tipped with 

 black. 



Throat nearly black ; breast below the collar with deep fulvous 

 spots and irregular lines ; belly and ventral region with a predomi- 

 nating pale fulvous white, and some nearly pure white spots, every 

 feather transversely lined and barred with black ; under tail-coverts 

 fulvous, unspotted. 



Wing-feathers brownish black ; primaries with about ten to twelve 

 irregular-shaped but rather triangular marks of deep fulvous upon 

 their external webs ; secondaries with irregular bars of pale fulvous, 

 which bars are mottled with black. 



First, second and third feathers of the tail brownish black, with 

 several obscure and badly defined- bands of reddish fulvous, and ob- 

 liquely tipped in a very conspicuous manner with fine, silky white. 

 Fourth feather of similar colour, but without the white tip, and with 

 the reddish fulvous bands more definite. Two middle tail-feathers 

 brownish black, and with about ten to twelve bars on each web of 

 deep reddish fulvous, well defined, and which are disposed obliquely 



