376 Zoological Society : — 



PROCEEDINGS OF LEARNED SOCIETIES. 



ZOOLOGICAL SOCIETY. 



March 10, 1857.— Dr. Gray, F.R.S., iu the Chair. 



Characters of some apparently New Species of American 

 Ant - Thrushes. By Philip Lutley Sclater, M.xl., 

 F.L.S., &c. 



1. FORMICARIUS TRIVITTATUS. 



Supra fusco-cinnamomeus, subtus clarior, gula pallidiore : alis 

 caudaque nigris cinnamomeo tinctis, illarum tectricibus minori- 

 bus et majoribiis fascia terminali et remigibus ipsis fascia me- 

 diali alba prceditis, itaqiie alis trifasciatis : oculorum ambitu 

 seminudo : rostra et pedibus nigris. 

 Long, tota /'O, alge 3*4, caudae 2 '5. 

 Hab. In ripis fl. Amazonum. 

 Mus. Brit. 



The only individual of this species which I have yet seen is that 

 in the British Museum. It is easily recognizahle among its conge- 

 ners by its tlirice-bauded wings. I am now acquainted with seven 

 birds which I consider to be probable members of this genus, viz. 

 — (1.) CAYANENSis, Bodd. PI. Eul. 821 {colma, Gm. et Bodd., 

 tetema, hicht. , fiiscicajnlla, Vieill., rufceps, Spix), ex Gmana et 

 Brasilia. (2.) analis (Lafr. et d'Orb.), Voy. d. I'Am. Me'r. Ois. 

 pi. 6*. f. 1, ex Bolivia, Cayenna et ins. Trinitatis. (3.) nigrifro'ns, 

 Gould, P. Z. S. 185.5, p. 68, ex Nov. Grenada et fl. Amazon. (4.) 

 MONiLiGER, Sclater, P. Z. S. 1856, p. 294, ex Mexico. (5.) tri- 



VITTATUS. (6.) ERYTHROPTERUS, Gould, P. Z. S. 1855, p. 69. 



(7.) NiGROMACULATus (Lafr. et d'Orb.), Voy. d. I'Am. Mer. pi. 6*. 

 f. 2, ex Bolivia et fl. Amazon sup. 



The last three birds have the space round the eyes more or less 

 denuded, and would form the subgenus Phi egopsis, Reichb., of which, 

 I believe, F. nigromacidatus is the type. In that very peculiar 

 member of this family Pyriglena nudicejis (Myiothera nudiceps, 

 Cassin, Pr. Ac. Sc. Phil. v. p. 106. pi. 6), this formation is developed 

 to a stiU greater extent, the whole top of the head being naked. 



2. CONOPOPHAGA CASTANEICEPS. 



Conopophaga ardesiaca, Tsch. Faun. Per. p. 1/9, et Sclater in 

 P. Z. S. 1855, p. 145, nee Lafr. et d'Orb. 



Supra olivascenti-brunnea ; pileo castaneo, frontem versus leetiore : 

 lateribns capitis et gula nigricanti-cinereis : penicillum post- 

 oculari album : subtus einerea, abdomine medio albescentiore : 

 lateribus oJivaceo indutis : mandibula superiors nigra, inferiors 

 flava, pedibus brunneis. 



Long, tota 4*4, alae 2*9, caudse 2*7. 



Hab. In Nova Grenada, Bogota et iu Peruvia Orientali(T'*c^.). 



Mus. Brit, et P. L. S. 



Tliis is a tjrpical Conopophaga, with the characteristic white pencil 



