Mr. J. Gould on new species of Birds from South America. 429 



American birds, and who pronounces them new to science ; I there- 

 fore embrace the earHest opportunity of placing them upon record. 



1. Campylorhynchus hypostictus, Gould. 



General hue of the upper surface brown, the feathers edged with 

 greyish-brown, producing a somewhat spotted appearance ; from 

 above each eye, down the side of the neck, an obscure streak of 

 buify-white ; upper tail-coverts dark brown, fringed with reddish- 

 brown ; along the margins of the primaries a series of dark brown 

 dots on a light brown ground ; tail brown, with lighter edges dotted 

 with dark brown like the primaries ; under surface greyish-white, 

 with a streak of light brown down the centre of each feather, small 

 on the throat, gradually increasing on the abdomen, and assuming 

 the form of bars on the flanks ; under tail-coverts buff, barred with 

 dark brown ; irides red ; bill light horn-colour ; feet olive-brown. 



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



Hab. River Ucayali in Peru. 



Remark. — This species is very closely allied to C. scolopaceus, 

 Spix, but differs in being of a rather larger size, in having a some- 

 what more curved bill, a more uniformly coloured back, and in the 

 greater number and larger size of the brown markings of the under 

 surface, which, moreover, extend on to the upper part of the neck 

 and throat. 



2. ChaMuEza nobilis, Gould. 



Head very dark brown suffused with rufous ; upper surface, wings 

 and tail- coverts rich reddish or saffron-brown ; tail reddish-brown, 

 crossed by a broad black band near the end, and slightly tipped with 

 buffy-white on the centre feathers, and much more conspicuously 

 on the lateral ones ; lores fawn-colour; under surface white, the 

 feathers of the breast broadly, and those of the centre of the abdo- 

 men narrowly bordered on the sides with brownish-black ; on the 

 flanks the latter hue increases to such an extent as to leave only a 

 lanceolate stripe of the white down the centre of each feather ; under 

 tail-coverts buff, speckled with brown ; above each eye a narrow 

 streak of buff commencing a little in advance of the centre of the 

 eye, and extending downwards as low as the nape ; irides brown ; 

 bill black ; feet reddish-brown. 



Total length, 9 j inches ; bill, 1-|- ; wing, 4|- ; tail, 2-|- ; tarsi. If. 



Hab. Chamicurros, on the eastern side of Peru. 



Remark. — This is the largest and perhaps the finest species of the 

 genus : its legs and feet are very powerful, its bill thick and strong, 

 its tail very short and rounded, its wings concave, and its plumage 

 offers that silkiness to the touch which is so characteristic of the 

 members of the genus Chamcezay of which it forms in every sense a 

 typical example. 



3. FORMICARIUS NIGRIFRONS, Gould. 



Band across the forehead black ; crown, occiput and nape deep 

 chestnut ; upper surface and wings rich brown ; central primaries 



