430 Zoological Society : — 



edged at the base with yellowish-brown ; base of the inner web of 

 the primaries and secondaries golden, showing conspicuously on the 

 under surface, but not perceptible on the up})er ; the outer covert at 

 the shoulder with a streak of ochreous-yellow along the margin of 

 its outer web ; tail brown at the base, gradually deepening into black 

 at the tip ; throat, neck and breast sooty-black ; abdomen and 

 under tail-coverts fuliginous-brown, assuming an olive tint on the 

 flanks ; irides brown ; bill black ; feet dark brown. 



Total length, 7 inches; bill, i; wing, 3| ; tail, 2^; tarsi, 1^. 



Hab. Chamicurros, on the eastern side of Peru. 



Remai'k. — About the same size and nearly allied to F. Cayennensis, 

 but may be at once distinguished from that species by the bar of 

 black on the forehead. 



4. 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 mth 

 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. 



5. SCHISTOCHLAMYS SPECULIGERA, Gould. 



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

 fourth and succeeding primai'ies 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 ; wing, 3 ; tail, 3 ; tarsi, |-. 



Hab. River Ucayali in Peru. 



6. Thamnophilxjs 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. River Ucayali in Peru. 



7. 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- 



