314 Mr. J. H. Gurney’s Notes on 
riére les narines, paupitres d’un beau vert clair.” <A very 
similar account is given by Léotaud at p. 38 of his work, to 
which I have already referred ; he says, ‘‘ Bec noir, blanchatre 
ala base de la mandibule inférieure, cire, lorum et paupiéres 
d’un jaune légérement temt de vert, pattes d’un joli jaune 
orangé, iris blanc avec une légére teint jaune.” 
The same author speaks thus of the type specimen, which 
I have already mentioned, of his “ Cymindis pucheranit” :— 
“ Bec noir, blanchatre a la base de la mandibule inférieure, 
cire, iris et pattes jaunes.” 
“ Cymindis boliviensis” of Burmeister, which, like “ C. 
pucherani,’ is probably founded on a melanistic specimen 
of Regerhinus uncinatus, is described in the P. Z. 8. for 1868, 
p. 633, as having “ the upper mandible black, the under man- 
dible whitish ...... Tris dark brown .... Legs yellow.” 
It seems that in melanistic specimens, and also in some 
ordinary immature examples, the colour of the iris varies from 
the pearly-grey adult type. Thus a young melanistic speci- 
men from Medellin, in the collection of Messrs. Salvin and 
Godman, is ticketed by the collector as having had yellow 
irides ; and an ordinary immature example from Venezuela, 
in the same collection, in the second or rufous stage of plu- 
mage, had the irides light brown. 
The changes of plumage incident to R. uncinatus before it 
attains its fully adult dress are very curious, and for the 
most part are sufficiently described in Mr. Sharpe’s volume ; 
there are, however, a few points on which I may endeavour 
to supplement his description by such additional information 
as I have been able to collect on comparing numerous ex- 
amples, most of which are preserved in the British and Nor- 
wich Museums and in the collection of Messrs. Salvin and 
Godman, who have very kindly allowed me the use of their 
specimens. 
In Léotaud’s ‘ Birds of Trinidad,’ p. 39, the description is 
given by that author of a young bird of this species, of which 
he says, “‘ parties inférieures d’un blanc tout-a-fait pur ;” and, 
although I have never seen a specimen precisely answering 
to this description, I think it most probable that this pure 
