Descriptions of two New Birds, of the genus Tyrannula. 275 



it appears to differ in the color of the upper parts, pusilla being 

 "intermediate between hair brown and oil green;" our species 

 is of a decided olive green : the front of pusilla is " hoary ;" in 

 our species dark brownish olive : the bands on the wing grayish 

 white ; in our species pale yellow : " throat and breast" of T. pu- 

 silla " pale ash gray ;" in this species the throat is yellow, and the 

 breast olive tinged with yellow. 



This species was first observed in the spring of 1840, near 

 Carlisle, Penn. During every succeeding spring since, it has 

 been seen in greater or less numbers, and several specimens pro- 

 cured each year. Its habits are much like those of the other spe- 

 cies of this genus ; it frequents low thickets near small streams, 

 is seldom found in large woods like T. Acadica or T. virens, and 

 is a very unsuspicious bird, allowing persons to approach within 

 a short distance. It probably goes further north than Pennsylva- 

 nia to breed, having never been observed after the latter part of 

 May or beginning of June. 



Tyrannula minima, (nob.) 



Specific characters. — Above dark grayish olive, breast light ash 

 gray, abdomen and lower tail coverts yellowish white. Tail 

 emarginate. Second and third primaries longest, first longer than 

 sixth. Bill horn color beneath. 



Description of a Male. 



Form, Sfc. — Body rather slender. Bill smaller than the other 

 species of the genus. Tarsus slightly longer than the middle toe. 

 Second primary longest, third nearly equal, and rather longer than 

 fourth, fifth one line shorter than fourth, first intermediate be- 

 tween fifth and sixth. Tail emarginate and slightly rounded. 



Color. — Bill dark blackish brown above, pale horn color be- 

 neath. Feet black. Plumage of the upper parts dark grayish 

 olive, crown somewhat darker, rump lighter and inclining to gray- 

 ish. A narrow ring round the eye grayish white. Fore part of 

 breast, sides, and sides of the neck light ash gray, middle of throat 

 white, rest of the lower parts very pale yellow or yellowish white. 

 Primaries and tail feathers wood brown, the former narrowly, and 

 latter broadly edged with olive. Lower row of lesser wing cov- 

 erts and the secondary coverts darker, tipped with dirty white, 

 that color forming two bands across the wings. Secondaries also 



