476 
Mr. J. H. Gurney's Notes on 
deration of the remaining Buteonine genera, amongst which 
it will, I think, he convenient to refer first to that very in¬ 
teresting newly discovered form which has received from its 
first describer, Mr. Bidgway, the appellation of Onychotes 
gruberi. 
As this species has been accidentally omitted from the index 
to Mr. Sharpe's volume, I may mention that his account of 
it will be found at page 158 of his Catalogue; and I may add 
that a fuller description, with woodcuts of the type specimen 
and of some of its details, is given at pages 252 to 254 of 
vol. iii. of the f History of North-American Land-Birds,' by 
Messrs. Baird, Brewer, and Bidgway. Since the publication 
of that work a second specimen has come to light ; and a very 
interesting account of both will be found in Mr. Bidgway's 
* Studies of the American Falconidse,' p. 134, from which I 
extract the following remarks:—“This Buteonine form has 
no very near relative among the American Ealconidse, nor, 
indeed, among those of the Old World * * * * General form 
and size most similar to that of species of Rupornis and As- 
turina ***** The general aspect of this peculiar Hawk 
is that of the smaller short-winged Buteones of tropical 
America." 
Mr. Bidgway describes the type specimen as “ everywhere 
dark greyish brown," and the second example as u above 
chiefly greyish brown, beneath ochraceous white," and adds 
further particulars in detail respecting both examples, for 
which I must refer my reader to Mr. Bidgway's own pages; 
but I may here transcribe his measurements of these two 
specimens, the only ones at present known :—“ Wing 10*10- 
11*50 inches, tail 6*50-7*30, culmen about *80, tarsus 2*70- 
2*80, middle toe 1*45-1*60, posterior claw 1, its digit *80." 
Both individuals are believed to have been obtained in 
California; but many years having elapsed since they were 
originally procured, though not then recognized as distinct. 
tained by Messrs. Salvin and Godman from Ecuador, and described by 
the former gentleman under the title of L. occidentalis in the present num¬ 
ber of this Journal ( posted ,, p. 496). 
