I\Ir. J. Gould on new species of Birds from South America. 345 



FORMICARIUS ERYTHROPTERUS, Gould. 



Head, upper and under surface and the tail black ; feathers of the 

 shoulders and mantle fringed with grey, giving it a scale-like appear- 

 ance ; those of the back fringed in a similar manner, but so nar- 

 rowly as to be scarcely apparent ; tail-coverts black, edged with 

 rusty-red ; extreme edge of the shoulder white ; wing-coverts black, 

 tipped with dark rust-red, forming first a narrow bar of red, and 

 then a broad one of black ; primaries rusty-red, largely tipped with 

 black ; secondaries rusty-red at the base, then black and tipped with 

 rusty-red, the extent of the red increasing as the feathers approach 

 the body ; orbits naked and apparently red ; bill black ; feet fleshy- 

 brown. 



Total length, 6f inches ; bill, ^ ; wing, 3^ ; tail, 2| ; tarsi, f . 



Hab. Interior of Demerara. 



Remark. — This is a very fine species. The specimen above de- 

 scribed, which is the only one I have seen, is in my own collection. 



SCHISTOCHLAMYS SPECULIGERA, Gould. 



Head, neck, breast, back, wings and tail black ; base of the third, 

 fourth and succeeding primaiies white, forming a small conspicuous 

 patch in the centre of the wing ; lower part of the back, rump and 

 upper tail-coverts grey ; under surface of the wing, abdomen and 

 under tail-coverts white ; flanks grey, with a few black feathers 

 interspersed on the sides of the chest ; irides red ; bill, legs and 

 feet greenish. 



Total length, 6f inches ; bill, f j wing, 3 ; tail, 3 ; tarsi, |-. 



Hab. Ucayli in Peru. 



Thamnophilus Corvinus, Gould. 



The entire plumage deep black with the exception of the shoulders, 

 on which is a broad mark of white ; bill black ; feet dark olive. 

 Total length, 7 inches; bill, 1| ; wing, 3f ; tail, 2| ; tarsi, \\. 

 Hab. Ucayli in Peru. 



Thamnophilus melanurus, Gould. 



Male. — Crown and sides of the head, crest, back, lesser wing- 

 coverts and tail, black ; the wing-coverts tipped with white ; re- 

 mainder of the wing blackish-brown ; throat and all the under surface 

 white ; bill black, becoming lighter at the base ; feet olive-brown. 



Total length, 8^ inches; bill, U; wing, 3^ ; tail, 3^ ; tarsi, 1^. 



Female. — Crow^l of the head, crest, upper surface of the body, 

 wings and tail, chestnut ; throat and chest white, passing into the 

 mingled grey and sandy-red of the flanks ; feathers clothing the 

 thighs rusty-red tipped with white ; bill blackish-brown ; feet olive- 

 brown. 



Hab. Ucayli in Peru ; I have also received examples from Bogota. 

 I must remark, however, that the specimens from the latter locality 

 are somewhat smaller than those from Peru. 



