LEPTOPOGON. 25 



2. Leptopogon flavovirens. 



Tyrannula flaviventris, Lawr. Ann. Lye. N. Y. vii. p. 328 \ 



Leptopoff on flavovirens, Lawr. Ann. Lye. N. Y. vii. p. 472^; Scl. Cat. Birds Brit. Mus. xiv. p. 119'. 



Supra olivaceus ; aUs et cauda nigricantibus, iUis distincte olivaceo-albido marginatis et bifasciatis, hac olivaceo 

 limbata ; oculonim ambitu albo : subtus olivaceo-flavidus, mento albieante ; subalaribus dUutioribus : rostro 

 corneo, mandibula pallida; pedibus plumbeisj iride(ave viva) bninnea. Long, tota 4-2, alse 2-1, caud® 

 2-0, rostri a rictu 0-6, tarsi 0-7. (Descr. exempl. typ. ex Panama. Mus. G. N. Lawrence.) 



Bdi. Panama, line of Eailway (M'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 L. 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 L. 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. 384^ (nee Cabanis) ; Sel. & Salv. Ibis, 1860, 

 p. 399 ' ; 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 = j P. Z. S . 1870, p. 197 ' ; 

 Sel. Cat. Birds Brit. Mus. xiv. p. 117 '. 



Olivaceus ; capite toto summo umbrino-brunneo ; alls et cauda nigricanti-brunneis, extrorsum ocbraceo-olivaceo 

 limbatis, iUarum tectricibus pallide umbrino terndnatis : subt.us gutture toto usque ad pectus paUide 

 olivaceo; abdomine medio flavo-olivaceo ; subalaribus et alls intus paUide umbrinis: rostro comeo, man- 

 dibulae basi albieante ; pedibus corylinis. Long, tota 4*8, alse 2-4, caudse 2*1, rostri a rictu 0-65, tarsi 0"5. 

 (Descr. exempl. ex Choctum, Guatemala. Mus. nostr.) 



Hah. Mexico, Playa Vicente {Boucard ^), Teapa in Tabasco {H. H. Smith) ; Guatemala ^, 

 Choctum (0. S. & F. B. (r.2) ; Costa Eica, Valza ( Carmiol ^) ; Panama, Calovevora 

 {Arce"^), Lion-Hill Station [M'Leannan^ % 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 L. 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, cbntb.-amer., Aves, Vol, II., December 1888. 4 



