274 Descriptions of two New . of the genus Tyrannula. 
"T'YRANNULA _ (nob.) 
Specific characters.—Above deep greenish olive, beneath bright 
sulphur yellow, sides and fore part of breast olivaceous. ‘Tail 
emarginate. - Third and fourth primaries poses. Bill brownish 
yellow beneath. 
Description of a Mic 
Form, §c.—Body rather stout. Bill broad and the sides con- 
vex. Tarsus longer than the middle toe. Wings rounded ; Boop 
primary longest, fourth slightly sho ery ine sh 
than third, and two lines longer th an fift th, 
but longer than sixth. Tail emarginate and slightly rounded. — 
- Color.—Bill above dark ‘blackish brown, beneath light yellow- 
ish brown. Feet brownish black. Plumage of the upper parts 
deep greenish olive, crown of the head rather darker, the feathers 
having their centres dark brown. A narrow ring round the eye 
pale yellow. Lower tail coverts, abdomen, and linings of the 
wings, bright sulphur yellow, deepest on the abdomen. Sides 
of the body, fore part of the breast, and sides of the neck, olive, 
lighter than the back, and inclining to yellowish on the throat. 
Primaries and tail foathtes dark brown, the former bordered with 
grayish, and the latter with olive like the back. The lower row 
of Jesser wing coverts and the secondary coverts darker, tipped 
with pale yellow, that color forming two bands across the wing. 
Secondaries darker than the primaries, and edged with pale yel- 
Ow. ; 
Length 5 inches 4 lines; extent 8 inches 8 lines; folded wing 
2 inches 9 lines. 
The sexes are similar in color, but the female is generally 
rather smaller. 
Observations.—This strongly marked species will at once be 
distinguished from every other by the deep yellow of its under 
parts. It resembles 7’. Acadica of Gmelin (querula of Wilson) 
somewhat in form, but Acadica by comparison will be found to 
be a larger bird, ahter olive above, and very pale yellow beneath. 
The tail of FeO Ae is even or slightly Rents, in this species — 
_ emarginate. 
We have no specimen of 7’ pusilla, of en soa but upon ‘a 
comparison with the description in Swainson and Richardson's — Z 
Zoology of North pes. (so favorably known for accuracy;) — 
