162 



it a striated appearance, bounded in front above the nostrils with 

 whitish ; feathers at the back of the head, which are lengthened 

 into a short occipital crest, back of the head, back, and sides of the 

 neck, all the under surface, thighs and under tail-coverts rufous, 

 all but the thighs and under tail-coverts with a stripe of black down 

 the centre of each feather; back, rump and wings brown, the centre 

 of the wing lighter ; primaries brownish black, becoming darker at 

 the tip, and barred throughout with grayish buff, which is conspicu- 

 ous on the under surface, but scarcely perceptible on the upper, except 

 at the base of the inner webs ; under surface of the wing mottled 

 with reddish brown and black ; tail mottled grayish brown, crossed by 

 seven or eight distinct bars of blackish brown, the tips being lighter ; 

 cere and bill lead-colour, passing into black at the tijJ ; eye reddish 

 hazel, surrounded by a narrow blackish brown eyelash ; feet and toes 

 very light lead-colour. 



Total length, 2H inches ; bill, 1| ; wing, 15 ; tail, 9^ ; tarsi, 2|. 



This species is very robust, and although but a small bird, is in 

 every respect a true Aquila. It is nearly allied to, l)ut much stouter 

 than Aquila j)ennata. 



Hab. Yarrundi on the Upper Hunter, New South Wales. 



BuTEo MELANOSTERNON. B. rostro grundi, et elongate : guld, pec- 

 tore et abdomine tiigris ; primariis cid basin subtils albis ; caudd 

 cinered. 



Crown of the head, face, chin, chest and centre of tlie abdomen, 

 deep black, passing into chestnut-red on the flanks, thighs and un- 

 der tail-coverts ; back of tlie head chestnut-red, becoming black in 

 the centre of each feather; shoulders whitish buff; all the upper 

 surface deep brownish black, margined with chestnut-red ; primaries 

 white at the base, deep black for the remainder of their length ; cere 

 and base of the bill purplish flesh-colour, passing into black at the 

 tip ; irides wood-brown ; feet white tinged with lilac. 



Total length, 22 inches; bill, 2^; wing, 19^; tail, 8^ ; tarsi, 2|. 



This species is nearly allied to the Red-tailed Hawk of North 

 America, and the Buteo Jackal of South Africa, but from both of 

 these it may be distinguished by the jet-black colouring and by its 

 more lengthened bill. During flight the white at the base of the 

 primaries is very conspicuous, and is strikingly contrasted with the 

 black of the chest and the brown of the other part of the wings. 



Hab. Interior of New South Wales. 



Falco hypoleucos. Fal. corpore superne cinereo-fusco : singulis 

 plumis margine dilutiore cinctis : corpore subtus albo ; plumis strigd 

 fused apud apiceni in maculam latam desinente, ornatis. 



Head and all the upper surface grayish brown, the feathers of the 

 head having a fine stripe of black down the centre, the remainder 

 dark brown in the centre ; chin and all the under surface white, with 

 a fine line of black down the centre, passing into a spatulate form 

 near the tip ; outer webs and tips of the primaries brownish black, 

 the extreme ends being whitish ; their inner webs whitish, crossed 

 by numerous narrow bars, fading into a point as they approach the 



