134 REVIEW OF AMERICAN BIRDS. [PART I. 
As stated, this species is very similar above to castaneus; the 
black bars on the tail are rather more continuous. The under parts, 
however, are white, except flanks and crissum—not chestnut; the 
bars much more decided, and extending forward over the jugulum, 
throat, and chin, instead of being unmarked. The resemblance to 
T. nigricapillus, Sclater, from Ecuador, is still closer; this, how- 
ever, has the throat pure white, instead of being barred with black. 
Truando Falls, ‘ 
Smith- Collee- Sex | wnen | | 
sunian tors and Locality. Collected Reeeived from Collected by 
No. | No. | Age. | is | . 
Z ‘ faster Co i LD eben ale, yes 
17901 | 172 [Avi ea Truando River, N. G. 
Lt. N. Michler. A. Schott. 
21,683 | 218 < ss 
PHEUGOPEDIUS, Casanis. 
Pheugopedius, Cas. Mus. Hein. 1850, 79. (Type P. genibarbis = melanos.) 
General characters of Thryothorus. The bill, in typical species, 
much thicker and stouter, as in Cyphorinus ; height about one-third 
length above ; culmen nearly straight to the rather abrupt extremity. 
Owing to the greater breadth of the nasal membrane, the overhang- 
ing roof of the nostrils becomes more valvular; and, in the dried 
specimen at least, is very apt to close the nostril, or to leave a very 
narrow crescentic slit, thus distinguishing the genus very readily 
from Thryophilus. The tail appears more graduated, and exhibits 
a tendency towards being slightly decurved or arched above and not 
plane. 
I have taken the characters above given partly from P. melanos, 
the type, and partly from P. fasciato-ventris. The transition, how- 
ever, from Thryothorus to Pheugopedius is quite gradual, through 
such species as rutilus and maculipectus. T. felix is more like 
a Thryothorus in the bill, and nearest Pheugopedius in the tail. A 
synopsis of the principal species will be found under Thryothorus. 
Pheugopedius fasciato-ventris. 
? Thryothorus fasciato-ventris, Larres. Rev. Zool. 1845, 337 (Bogota).— 
Cyphorinus fasciato-ventris, LAWRENCE, Ann. N. Y. Lye. VII, 1861, 
320, no. 186 (Panama). 
Cyphorinus albigularis, ScuavER, P. Z. 8. 1855, 76, pl. 88 (Panama). 
Hab. Bogota to Isthmus of Panama. 
(89, 4.) Above rather bright reddish-brown (especially on the lower 
back) ; the exposed surface of wings, including greater coverts, and upper 
