365 
Mr. P. L. Sclater on the Neotropical Pipits. 
is to be referred, though when two such extremes are com¬ 
pared as TaczanowskPs A. calcaratus and A. hrevirostris it is 
somewhat startling to affirm that they ought to be put 
together. For the present, at any rate, I keep them distinct. 
In A. furcatuSf then, the outer rectrix is pure white, with 
a broad black patch on the inner web, beginning at the base, 
and extending up to within one third of the length of the 
feather from the tip. Towards the tip there is likewise more 
or less indication of a narrow black patch on the outer web. 
In the second rectrix (see fig. 2 a) there is a very clear and 
Fig. 2. 
a. Second left outer rectrix of A.furcatus (lower surface). 
h. Foot of ditto. 
distinct broad white line along the inner side of the shaft, the 
remaining (outer portion) of the inner web being quite black. 
This is obviously a mere augmentation of the corresponding 
colours in A. correndera-, but the colours are much more 
definite. 
D^Orbigny gives Patagonia and High Bolivia as the patria 
of his Anthus furcatus. If my views as to his species are cor¬ 
rect, it also occurs near Buenos Ayres and in Central Peru, 
having nearly the same range as A. correndera. The ques¬ 
tion is. Is it really separable from that species ? 
In three examples of A.furcatus before me.the two middle 
rectrices are slightly shorter than the others, and the tail may 
be said to be slightly forked. But I also observe this feature 
in some specimens of A. correndera. 
