Genus Thamnophilus, Vieillot. 245 



down to where the black terminates on the inner barb, leaving 

 only a small, oval, black spot between it and the broad white 

 termination of the feather. 



31. Thamnophilus pileatus, Swainson. 

 Thamnophilus pileatus, Sw. Zool. Journ., ii. p. 91. 



" T. supra cinereus, infra pallidior, enropygio pectorisque la- 

 teribus fulvis ; vertice nigra ; remigum fuscarum margine tes- 

 taceo ; rectricum acutarum apicibus lineaque marginali albis. 



Long, tota 6*0, alse 2-7, caudse 2-5." (Swains.) 



Hab. Brazil, Catinga woods of Bahia. 



Mr Swainson compares this species with T. ambiguus, from 

 which it seems to differ in the markings of the tail-feathers. 

 As to these being pointed at the extremities, to which fact Mr 

 Swainson appears to attribute much importance, I do not think 

 that can always be relied on as a valid distinctive character. 

 I have as yet seen no bird I could recognize as this species. 



32. Thamnophilus ambiguus, Swains. 

 Thamnophilus ncevius, Vieill. N. D., iii. 316 ; et Ene. Meth. 

 p. 747 ; Lafr. Rev. et Mag. de Zool., 1853, p. 338. Th. ambi- 

 guus, Sw. Zool. Journ., ii. p. 91 ; Gray's Gen., i. p. 298. 

 Th. nigricans, Max. Beit., iii. 1006 ; Gray's Gen., i. p. 218. 

 Th. ferrugineus, Sw. Zool. Journ., ii. p. 91 ($) \ Gray's Gen., 

 i. p. 298. 



J cinereus ; subtus albescentior ; pileo dorsoque medio ni- 

 gris, hujus pennis interne albis ; tectricibus alarum caudse- 

 que superioribus et rectricibus nigris albo terminatis, his om- 

 nibus prseterea in utroque pogonio medialiter albo notatis ; 

 primariis anguste, secondariis latins extus albo limbatis. 



$ virescenti-cinerea, subtus pallide fulva ; pileo rufo ; tec- 

 tricibus alaribus et secondariis nigris, horum margine externa, 

 illarum apice albis ; primariorum marginibus et rectricibus 

 brunneis, his albo terminatis. 



Long, tota 5*7, alee 2-8, caudse 2*3. 

 Hab. South-east Brazil (Max.) ; Minas Geraes (Such.) 

 Vieillot's T. nmvius appears to be intended for this species, 

 though he professes to copy his characters from Latham. Mr 

 Swainson, however, has clearly put forward the distinctions 



