234 BIRDS OF BRITISH GUIANA. 



round die eye is covered with short downy feathers, and the region 

 between the eye and the uostiils with black hair-like bristles ; 

 underlining of tail and quills for the most part silvery grey. 



Total length 190 mm., culmen (including the cere) 32, wing 400, 

 tail 100, tarsus 86, middle toe and claw 48. 



This species is not represented in the McConnell collection, and 

 the bird described was collected by H. Whitely at Mount Roraima 

 on June 25th, 1883, and is now in the British ]\Iuseuni — Salvin- 

 Godman collection. 



The following is a copy of the original description. — " B. itni- 

 color Nob. — Buteo, toto corpoie nigrante; basi pluinarum albida ; 

 basi rostri et oceipite albescentibus ; remigihus rectricibusque 

 plumbeis transversaliter lineis distinctis: tarsis squamellatis. Lat. 

 47 cent. — Hah. pro\ incia Ayupayacensi (rep. Boliviana)." 



Buteo indcolor was placed as a synonym of E. enjlliroyiotus by 

 Dr. Sliarpe in the 'Catalogue of the Birds in the British Museum,' 

 and nobody appears to have suspected it to be a distinct species 

 until the late Henry AVhitely collected the two specimens 

 mentioned here, one of which was sent to the Paris Museum for 

 comi):irison with the type of d'Orbigny's description, by Siilvin. 

 (/'. lijis, 188G, p. 72, from which the following extract has been 

 copied : — 



" Mr. AVhitely obtained two specimens of this Buzzard, one of 

 which I .-ont to Mons. E. Ou.-talet, requesting him to be kind 

 enough to compare it with the type of Buteo xudcolor d'Orbigny 

 from Bolivia. His reply is as follows : — 



'•' ' ('her Monsieur Salvls, — Suivant le desir que vous avez 

 exprime, j^ai compare I'oiseau que vous m'avez envoye par I'inter- 

 mediaire de M. Stolzmann avec le type du Buteo imicolor de 

 d'Orbigny, et j'ai reconnu que les deux specimens appartenaient trcs 

 probablement a la meme espece. Cependant les dimensions des 

 ailes ne sont pas absolument concordunts, et le plumage, tout en 

 cfFrant le meme dessin, n'est pas enticrement identique sous le 

 rapport des nuances. Ainsi dans le tyjio de Buteo imicolor I'aile 

 mesure 37 centimetres, et le doigt median 3 centimetres (sans 

 I'ongle), tandis que dans le Buteo de votre collection I'aile mesure 

 41 centimetres et le doigt median pres de 4 centimetres. Le 

 type de Buteo unicolor est d'un brun luligineux, avec quelques 

 marques blanches (formees sur la base des plumes) sur la nuque, 

 les ailes brunes avec des raies transversales peu distinctes sur 



