134 



REVIEW OF AMERICAN BIRDS. 



[part T. 



As stated, this species is very similar above to castaneus ; the 

 l)lack 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. 



PHEUGOPEDIUS, Caba>is. 

 Pheugopedius, Cab. Mus. Hein. 1850, 79. (Type P. geriibarbis :=melanos.) 



General characters of Tliryothoriis. The bill, in typical species, 

 much thicker and stouter, as in Cyjjhorinus ; height about one-third 

 length above ; culracn 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 Thri/ophilus. The tail appears more graduated, and exhibits 

 a tendency towards being slightly decurved or arched above aud 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 Tliryothorus to Pheugopedius is quite gradual, through 

 such species as rutilus and maculipectus. T. felix is more like 

 a Thri/othorus in the bill, and nearest Pheugopedius in the tail. A 

 synopsis of the principal species will be found under Tliryothorus. 



Pheugopedius fasciato-ventris. 



? Tliryothorus fasciato-ventris, Lafres. Rev. Zool. 1845,337 (Bogota). — 

 Cyphorimis fasciato-ventris, Lawrence, Ann. N. Y. Lye. VII, 1861, 

 320, no. 186 (Panama). 



Ci/phorinus albifjularis, Sclatek, P. Z. S. 1855, 76, pi. 88 (Panama). 



Ilab. Bogota to Isthmus of Panama. 



(89, % .) Above rather bright reddish-brown (especially on the lower 

 back) ; the exposed surface of wings, including greater coverts, and upper 



