YELLOW-RUMPED BULL-FINCH. 
Critliagra chrysopyya. 
PLATE XVII. 
Olive-grey; rump, front, eye-stripe, and under plumage, 
yellow ; tail short, tipt with white. 
The little bird we now distinguish, for the first 
time by the above name, is the only species we 
have yet received from Senegal belonging to the 
family of Bull-finches ; this division of the finch 
family, as a whole, is distinguished from all others 
by a short and strong bill, curved above, and more 
or less swollen or inflated on the sides ; the under 
mandible is generally stronger or thicker than the 
upper, which, with the arched commissure, forcibly 
reminds us of the bill of the parrots. Our own 
beautiful native species exhibits these peculiarities 
very strongly, and will give the student a very good 
idea of the whole group. 
But as the Bull-finches pass insensibly into the 
haw-finches, so there must be one part of the series 
where the characters of both are so blended, that 
it will be difficult to say, looking merely to a single 
species, which are the most predominant ; whether, 
in other words, our bird belongs to one or to the 
