24 TYRANNIDZ. 
LEPTOPOGON. 
Leptopogon, Cabanis in Tschudi’s Fauna Per. p. 161 (1845) (type L. superciliaris, Cab.) ; Scl. 
Cat. Birds Brit. Mus. xiv. p. 114. 
Leptopogon contains eleven or twelve species, all belonging to the Neotropical region, 
only three of which enter our fauna, viz. the typical species, L. superciliaris, which 
reaches Costa Rica and has an extended range in South America; L. pileatus, one of 
the doubtful forms of the Brazilian L. amaurocephalus, found only in part of Central 
America and the Mexican State of Vera Cruz; and Z. flavovirens of Panama. 
Leptopogon has a bill shaped much as in Mionectes, but the nostrils are more linear 
and are overhung by a membrane ; the rictal bristles are more strongly developed, the 
tarsi comparatively shorter, and the feet weaker; the 3rd, 4th, and Sth quills are 
nearly equal and longest, 2nd> 6th, lst<longest secondaries; tail long, nearly=wing, 
=4 tarsus. 
1. Leptopogon superciliaris. 
Leptopogon superciliaris, Cab. in Tsch. Fauna Per. p. 161, t. 10. f. 2° ; Salv. Ibis, 1870, p. 115?; 
P. Z. 8. 1870, p. 197°; Scl. & Salv. P. Z. 8.1879, p.613*; Tacz. Orn. Pér. ii. p. 246°; Sel. 
Cat. Birds Brit. Mus. xiv. p. 115°. 
Supra viridi-olivaceis ; pileo toto plumbeo ; superciliis albo et cinereo variegatis ; macula auriculari fusca ; alis 
et cauda nigricantibus viridi-olivaceo limbatis, illarum tectricibus rufescenti-ochraceo terminatis : subtus 
gutture toto usque ad pectus griseo-olivaceo; abdomine viridi-sulphureo : rostro et pedibus plumbeis, 
mandibula basi pallida. Long. tota 5:3, ale 2°7, caude 2°5, rostri a rictu 0°65, tarsi 0°65. (Deser. 
exempl. ex Costa Rica. Mus. nostr.) 
Hab. Costa Rica (Carmiol *) ; Panama, Volcan de Chiriqui, Bugaba, Calovevora (Arcé °). 
—CotomBia®; Ecuapor®; Peru !®; Bo.ivia®. 
Leptopogon superciliaris was discovered by Tschudi in Peru, where it has since been 
found in many places by Jelski and Stolzmann up to an elevation of 4000 feet. It 
spreads southwards to Bolivia, where Buckley met with it, and it is also found in 
Colombia, as skins of it occur in the trade collections of Bogota. In Ecuador it is found on 
both sides of the Cordillera, as we have skins of it obtained by Buckley at Sarayacu and 
others from the Balzar Mountains near Guayaquil ; but between the eastern and western 
birds Dr. Taczanowski and Graf von Berlepsch trace some differences and call the 
western one J. s. transandinus. The head seems to be a trifle greener, but the differ- 
ence is not greater than what we find between birds of opposite sexes from the State 
of Panama. Our Central-American examples have the tips of the wing-coverts a little 
less rufescent than those from more southern localities, with the exception of Bolivia; 
our only skin from that country has hardly any rufescent tint on these feathers. 
L. superciliaris probably lives in forests lying at a higher elevation than those 
frequented by L. pileatus, but our information concerning both species is very meagre. 
