Mr. W. E. Brooks on the Genus Acanthis. 359 
lat. to Ugogo, and possibly Mosambique, on the east side, and 
to Senegambia on the west coast. 
a and b (Brit. Mus.) . Bright varieties : cheeks and ear- 
coverts buff, breast shaded with rufous; very typical forms 
of Ploceus russi, Finsch. I have examined very similar spe¬ 
cimens in the Berlin and Paris Museums. They have occa¬ 
sionally the sides of the head and throat, which would be 
black in typical males, slightly marked out in brown; but I 
find no sex attached to any of the labels. In the Zoological 
Society’s Gardens there is now a very fine living specimen 
of this form, which I regard as a variety of Q. cethiopica, 
although I am unable to prove such to be the case. 
XXXYI.— Additional Notes on the Genus Acanthis. 
By W. Edwin Brooks. 
Thanks to the kindness of Dr. L. Stejneger, of the United 
States National Museum, I have been able to examine a 
number of Redpolls of different species, and I find that it is 
necessary to supplement my notes on these birds in f The Ibis’ 
for October 1885, pp. 381-384, by some additional parti¬ 
culars. 
The superiority of the broad white edgings to the tertials 
and tail-feathers, but especially the latter, in Acanthis exilipes 
will not hold good; for A. hornemanni , in good fresh feather, 
has very marked white edges to the tail-feathers. There is also 
much white on the tertials. The reliable distinction between 
the two is certainly the very great difference in size. The 
wings of three male A. hornemanni now before me measure 
3'42, 3'30, and 3'28 inches; and of three male A. exilipes 
3*00, 2‘90, and 2*90. In his paper in f The Auk 9 for April 
1884, Dr. Stejneger gives the average for the wings of six 
male A. hornemanni as 3*40, and of seventeen male A. exilipes 
as 2*91, of six female A. hornemanni 3*31, and of twelve 
female A. exilipes 2 , 80. I think it may also be remarked 
here that the wing of A. exilipes averages longer than that of 
A. linaria. 
