Genus Thamnophilus, Vioillot. 24.7 



Hab. Corrientes, in the Argentine Rep. (d'Orb.) 

 I have one specimen, which I believe to be an immature 

 male of this species, in my own collection, and have seen 

 others. It may be distinguished, as M. d'Orbigny observes, 

 from Thamnophilus ncevius, which it resembles in the mark- 

 ings of the tail feathers, by the want of white edgings to the 

 secondaries, and its rufous belly. In his characters for this 

 species in the Rev. et Mag. de Zool. for 1853, p. 339, the 

 Baron de Lafresnaye omits all notice of this last very dis- 

 tinctive character ; indeed he says " colore subtus intensius 

 ardesiaco;" and I cannot help thinking, therefore, that he 

 was referring to some other bird, possibly to the true " cceru- 

 lescens" of Vieillot. 



35. Thamnophilus ruficollis, Spix. 

 ThamnopMlus ruficollis, Spix. Av. Bras., ii. p. 27, pi. 37, 



fig. 1 ; Schomb. Reise., iii. p. 687. 



Mediocris ; fuliginoso-cinereus ; corpore subtus, capite col- 

 loque rufis ; tectricibus alarum caudseque apice albo-margi- 

 natis (Spix). 



Hab. Brazil (Spix), British Guiana, lower bush of the coast 

 woods (Schomb.) 



The only bird I have seen likely to belong to this species, 

 described by Spix and recognized by Schomburgk, is one in 

 Mr Gould's collection from Chamicurros, which may be cha- 

 racterized as follows : — 



Yirescenti-cinereus ; capite toto cum corpore subtus rufis, 

 ventre dilutiore ; alis nigris, tectricibus omnibus et secondariis 

 albo late limbatis ; primariis externo margine brunneis ; alis 

 subtus ochraceis ; cauda nigra, rectricibus omnibus apice et 

 una utrinque extima pogonio externo medio albo notatis ; in- 

 terscapuliis quibusdam albo mixtis. 



Long, tota 5*7, alae 2*7, caudse 2*3. 



36. Thamnophilus maculipennis, Sclater. 

 Thamnophilus stellaris, Spix, Av. Bras., ii. p. 27, pi. xxxvi. fig. 

 2\ ; Sclater, Pr. Z. S., 1854, P. (May 9, certe) ; Th. ma- 

 culipennis, Sclater, M.S. 

 $ plumbeus subtus clarior ; pileo dorsoque medio nigris ; 



