86 
cuvier’s thick-bill. 
in the sub-genus Pachyrynckus, which name M. 
Spix very improperly applies also to the genuine 
Psari. I had long entertained the suspicion that 
the female was the T. Vieillotii of the Illustrations 
of Ornithology; hut I was only confirmed in this 
belief by M. Natterer, who assured me, when in- 
specting my collection, that such was truly the fact. 
In size, both sexes in our specimens are equal, 
and they do not exceed that of a sparrow. In the 
male the crown is of a deep and glossy black, which 
is separated from the bill by a narrow frontal line 
of white, which passes over the lores to the eyes. 
The upper part of the neck is of a clear and delicate 
cinereous, which tinges the ears, and advances to- 
wards the sides of the throat. The rest of the upper 
plumage is of a bright olive, or rather yellowish- 
green, the quills alone being blackish beyond their 
outer edges ; the tail is much rounded ; the feathers 
olive-green, margined at their tips "with yellowish- 
white ; the under plumage is white, with a broad 
and bright band (undefined at the edges) across the 
breast, the under wing-covers being of the same 
colour. 
The female is in all respects like the male, except 
in the following particulars : — The crown of the 
head, instead of being black, is of the same green 
as the back ; the eyes are surrounded with a yel- 
low ring ; while all those wing-covers which are 
nearest to the carpus, or outer edge, are covered by 
a spot of bright rufous. Between the first and 
second primaries of the male is a spurious quill, 
