LEPTOPOGON. 25 
2. Leptopogon flavovirens. 
Tyrannula flaviventris, Lawr. Ann. Lyc. N. Y. vii. p. 3287. 
Leptopogon flavovirens, Lawr. Ann. Lyc. N. Y. vii. p. 472’; Scl. Cat. Birds Brit. Mus. xiv. p. 119°. 
Supra olivaceus ; alis et cauda nigricantibus, illis distincte olivaceo-albido marginatis et bifasciatis, hac olivaceo 
limbata ; oculorum ambitu albo: subtus olivaceo-flavidus, mento albicante ; subalaribus dilutioribus : rostro 
corneo, mandibula pallida; pedibus plumbeis; iride (ave viva) brunnea. Long. tota 4°2, ale 2°1, caudex 
2-0, rostri a rictu 0°6, tarsi 0°7.  (Descr. exempl. typ. ex Panama. Mus. G. N. Lawrence.) 
Hab. Panama, line of Railway (J/‘Leannan !). 
This species is closely allied to L. tristis, Scl. & Salv., which may have to be merged 
with it when a better series of specimens is available for comparison. Compared with 
our only specimen of L. tristis from Bolivia the type of Z. flavovirens is rather brighter 
olive-colour on the back, the wing-bars are more confluent and not so much broken into 
spots as in L. tristis. The latter bird, too, has a distinct spot on several of the median 
secondaries on the outer web near the tip which we do not see in Z. flavovirens. 
The type specimen in Mr. Lawrence’s collection, which we now have an opportunity 
of describing, is the only example we have seen of this species. It was contained in 
one of M‘Leannan’s collections made on the Isthmus of Panama, It was found on 
high trees. 
3. Leptopogon pileatus. 
Leptopogon amaurocephalus, Scl. P.Z.S. 1859, p. 8384* (nee Cabanis) ; Scl. & Salv. Ibis, 1860, 
p. 899°; P.Z.S. 1864, p. 358°; Lawr. Ann. Lye. N. Y. vii. p. 328 *. 
Leptopogon pileatus, Cab. J. f. Orn. 1865, p. 414°; Salv. Ibis, 1869, p. 319°; P. Z. S. 1870, p. 197’; 
Scl. Cat. Birds Brit. Mus. xiv. p. 117°. 
Olivaceus ; capite toto summo umbrino-brunnco ; alis et cauda nigricanti-brunneis, extrorsum ochraceo-olivaceo 
limbatis, illarum tectricibus pallide umbrino terminatis: subtus gutture toto usque ad pectus pallide 
olivaceo ; abdomine medio flavo-olivaceo ; subalaribus et alis intus pallide umbrinis: rostro corneo, man- 
dibule basi albicante; pedibus corylinis. Long. tota 4°8, ale 2°4, caudw 2°1, rostri a rictu 0-65, tarsi 0°5. 
(Descr. exempl. ex Choctum, Guatemala. Mus. nostr.) 
Hab, Mexico, Playa Vicente (Boucard'), Teapa in Tabasco (7. H. Smith); GuatTeMa.a ®, 
Choctum (0. 8S. & F. D. G.?); Costa Rica, Valza (Carmiol °); Panama, Calovevora 
(Arcé"), Lion-Hill Station (1/‘Zeannan* 4), San Pablo Station (0. S.). 
This is a northern race of the Brazilian Leptopogon amaurocephalus, from which it 
differs but slightly ; the size is considerably less, the crown of the head rather darker, 
and the under wing-coverts, as well as the inner margin of the wing-feathers, of a 
darker umber tint. 
For some years our bird was not considered to be separable from L. amaurocephalus, 
but in 1865 Dr. Cabanis named it LZ. pileatus from Guatemalan examples. Since then 
the latter title has been adopted. 
The range of this species seems to be strictly confined to the denser hot tropical 
forests, and at present has only been found in such districts in Mexico and Guatemala 
BIOL. CENTR.-AMER., Aves, Vol. II., December 1888. 4 
