53 
roots ; ear-covers ash-grey, with whitish shafts and shaft-spots ; back 
olive-grey, with black spots ; the roots of all the feathers on the back 
pure white ; wing-covers with rufous yellow margins, which form two 
small bands; lower parts white, on the sides tinted with brownish 
rufous, and with broad black shaft-spots ; the middle of the throat, 
belly and under tail-covers white; tail black-brown, with olive 
margins. 
Head, 40; gape, 22; height of the bill, 7 ; breadth, 12; wing, 72; 
tail, 55; tarsus, 18; middle toe, 15 mm. long. 
Lord Derby’s collection. Brit. Mus. 
A communication was received from Dr. G. R. Bonyan, of British 
Guiana, on the Raptorial Birds of that country, of which the follow- 
ing is an abstract :-— 
3. Nores on THE RaproriaAt Birps or Britis GUIANA. 
By Dr. G. R. Bonyan. 
There are, I believe, only three species of Vulture in British Gui- 
ana. The first is the well-known 
KING OF THE VULTURES. 
Sarcorhamphus Papa of Dumeril.—Irubicha, Azara.—Vultur 
Papa, Linn.—Le Roi des Vautours, Cuv.—Carrion Crow Governor 
of negroes. 
There is a very good drawing of this bird in Latham’s ‘General Hi- 
story of Birds.’ It is by no means common in Demerara, but young 
birds are occasionally brought from the upper rivers, particularly 
the upper parts of the Mahaica and Mahaicony creeks, where they 
abound, to the town. They are easily tamed and eat any sort of 
meat, not showing a particular predilection to putrid meat. Although 
I have seen this bird in its wild state, I have never witnessed it alight- 
ing upon a carcase ; the common Carrion Crows, it is said, cede place 
until the king has fed. Mr. Waterton witnessed this singular fact, 
and I have heard it corroborated by more than one person of veracity. 
I know nothing of its habits or nidification. The colours about the 
head and neck are remarkably beautiful and varied, and have a down 
bloom as it were, which it is impossible to imitate by painting the 
preserved specimen. 
The Common Carrion Crow. Cathartes iota. 
If this bird be the same as “ Vultur iota” of Charles Bonaparte, 
it is imperfectly described by Cuvier as having only the head naked ; 
whereas it has the head and the neck more than half way down, 
naked, warty and black ; nor is its plumage of a shining black, but 
dull and inky. The Carrion Crow is seen over the whole surface of 
the country, either soaring on dry sunny days at an immense height 
in the air, or swooping down in wide gyrations towards the ground. 
If a carcase be thrown out on a dam, no Carrion Crow being within 
the range of vision, after a short time one will be seen in a distant 
