214 



J . Cinereus, subtus clilutior, ventre medio albo : pileo subcristato 

 nigro : interscapulio nigro albo mixto : alis caudaque nigris albo 

 terminatis : rectricis extimce pogonii externi dimidio apicali 

 albo, macula subterminali nigra : rostro breviore, altiore, com- 

 pressiore. 

 5 . Rufescenti-olivacea, abdomine ferrugineo : alis caudaque, sicut 

 in mari, albo notatis, sed remigum marginibus extends rufes- 

 centibus. 

 Long, tota 6*0, alse 2- 7, caudse 2*5. 



Hab. South-eastern Brazil (Burm.) ; Corrientes (D'Orb.). 

 Mm. Brit., P. L. S. 



Prof. Burmeister has identified — perhaps correctly — my Thamno- 

 philus ventralis with Swainson's Thamnophilus pileatus ; and I am 

 glad to follow his lead in reducing the number of useless synonyms 

 of supposed species of this genus. I have likewise convinced my- 

 self that the Thamnophilus maculatus of my " Draft Arrangement " 

 is nothing more than the female of this species. 



21. Thamnophilus Amazon icus. (PI. CXXXIX. fig. 1 <3 , 



fig. 2 $ .) 



Thamnophilus ruficollis, Spix, Av. Bras. ii. pi. 37. f. 1 ( $ ) ; 

 Schomb. Guian. hi. 687 ; Sclater, Edinb. N. Phil. Journ. i. p. 247. 

 3 . Cinereus : pileo, nucha et dorso summo, alis caudaque niger- 

 rimis : macula interscapularium magna alba : alis caudaque 

 albo terminatis : rectrice extima item in pogonio externo me- 

 dialiter albo notata. 

 5 . Rufescenti-olivacea : capite toto et corpore subtus ferru- 

 gineis, abdomine dilutiore : alis caudaque sicut in mari albo 

 notatis. 

 Long, tota 5*0, alse 2*6, caudse 2 - 3. 



Hab. Brazil (Spix) ; British Guiana (Schomb.) ; Upper Amazon 

 (Bates). 

 Mus. Brit., P. L. S. 



I have only lately acquired specimens of the male of this species 

 from Mr. Bates's collections on the Upper Amazon. The British 

 Museum have received specimens from the same source, and nmongst 

 them a young bird ; clearly showing that Spix's T. ruficollis is 

 merely the female. This bird may easily be distinguished from T. 

 tuevius and T. ambiguus by the black nape and upper back in the 

 male bird, aud the very different dress of the female. Spix's name 

 being only applicable to the female sex, I have deemed it necessary 

 to employ a new one. 



22. Thamnophilus capitalis. 



Thamnophilus capitalis, Sclater, P. Z. S. 1858, p. 65. 



d . Cinereus, alis iutus obscurioribus : pileo nigro; subtus dilu- 

 tior, tectricibus subalaribus et marginibus remigum interioribus 

 ochracescenti-afbidis : Cauda nigricante : rostro et jjedibus 

 plumbeo-nigris. 



