Zoologica 1 Society. 351 



of the neck a broad crescentic mark of blue-grey ; back, shoulder, 

 and tips of the greater wing-coverts golden olive, passing into 

 greenish yellow on the rump and upper tail-coverts ; greater wing- 

 coverts, outer webs of the primaries and the secondaries dark green ; 

 inner webs black ; sides of the face and throat sooty black, gradually 

 blending with the dark bluish grey of the under surface ; under tail- 

 coverts shining crimson ; thighs light chestnut ; bill yellow, clouded 

 with green for two-thirds of its length from the base, and black for 

 the remainder of its length ; the under mandible with an oblong 

 irregularly- shaped patch of black on each side near the base ; feet 

 greenish lead-colour. 



Total length, 18 inches ; bill, 4 ; wing, 7 ; tail, 1\ ; tarsi, 2. 



Hab. The forests of Cocapata, department of Cochabamba, Bolivia. 



Remark. — Three specimens of this highly interesting new species 

 were brought home by Mr. Bridges ; two of them are now in the 

 possession of the Earl of Derby, and the third in the collection at the 

 British Museum. The sexes are precisely similar in colour and 

 markings, but the female may be readily distinguished by her some- 

 what smaller size and by the much smaller size of the bill. 



The whole of the plumage is very dense or thick. 



Odontophorus Balliviani. Odont. capite cristdque ferrugineo- 

 rufis ; infra et pone oculum latd aterrimd maculd, supra et subter 

 lined rubro-cervmd marginatd ; corpore inferiore castaneo-fusco, 

 nigro minutissime maculato ; plumis singulis maculd albd ornatis. 



Head and crest rich rusty red ; beneath and behind the eye a broad 

 patch of deep black, bounded above and below by a stripe of reddish 

 buff; upper surface olive, minutely freckled with black; the feathers 

 of the centre of the back and scapularies with a fine line of buffy 

 white down the apical half of the stem, and with a small double spot 

 of black on their inner, and a large patch of black on their outer 

 webs, bounded above and below with rusty red ; primaries and se- 

 condaries brown, crossed with irregular bands of rusty red, freckled 

 with black; under surface dark chestnut-brown or coffee-colour, 

 minutely freckled with black, each feather with an irregularly- shaped 

 patch of white, bordered with black near the centre, giving the whole 

 of the under surface a singularly rich and sparkling appearance ; bill 

 black ; feet lead-colour. 



Total length, 12 inches; bill, 1; wing, 6 J ; tail, 2f ; tarsi, 2; 

 middle toe and nail, 2£. 



Hab. The forests of Cocapata, department of Cochabamba, Bolivia. 



Remark. — I have named this new bird Balliviani, in honour of 

 General Ballivian, President of the Republic of Bolivia. It is one of 

 the finest species of that section of the group to which the term 

 Odontophorus is now restricted, is nearly allied to the bird I have 

 named Odontophorus guttatus, and may be readily recognised by its 

 larger size and by the still more conspicuous marking of the under 

 surface. 



We are indebted to the researches of Mr. Bridges for our know- 

 ledge of this beautiful bird. 



Callipepla venusta. Call.fronte mento guldque holoserico-nigris, 



