Mr. G. N. Lawrence on new Birds from Panama. 183 
Upper plumage rather dull olive-green; crown and sides of 
the head, including the eyes, dusky olive-brown ; front greyish, 
connected with a conspicuous superciliary stripe of white, which 
terminates on a line with the occiput; the crest is very narrow, 
consisting of a few pointed feathers of bright vermilion ; wings 
and tail of a liver-brown, the wing-coverts, primaries, and most 
of the secondaries edged with pale rufous, a few of the inner 
secondaries edged with pale yellow; all the tail-feathers broadly 
margined on both webs with pale rufous; throat greyish 
white; lower part of neck, breast, and abdomen deep yellow; 
the lower part of the abdomen and the under tail-coverts 
paler yellow; under wing-coverts deep yellow; inner edges of 
quills of a pale salmon-colour; bill and legs black. 
Length 6 J inches; wing y 3 ^; tail 3; bill \ ; tarsi y^-. 
This species somewhat resembles M. similis, Spix, but is 
smaller, the tail-feathers narrower, with their rufous edgings 
paler and much broader. 
The very narrow crest is a striking character; and as the spe¬ 
cimen described seems to be in adult plumage, I judge it to be 
fully developed. 
6. Myiobius atricaudus, sp. nov. 
Myiobius barbatus , Lawr. (nec Gm.), Ann. Lyc. N. Y. vol. vii. 
p. 328. 
Upper plumage greenish olive; crest bright yellow; rump 
sulphur-yellow; quills blackish brown, narrowly edged with 
olive-green; tail black; under plumage pale yellow, tinged with 
pale fulvous on the throat; upper mandible dark brown, under 
mandible white, just tipped with brown; legs brown. 
Length 4J inches; wing 2J; tail 2§; tarsi f. 
Male and female alike in plumage. 
Smaller than any of its allies, also paler below, and with less 
tawny on the neck and breast even than in M, ocanthopygius ; 
the colour of the rump is about the same as that of M. sulphu- 
reipyyius, but more in extent, and the bill is rather smaller than 
in that species ; the tail is black ; in all other species examined, 
it is blackish brown. 
