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BUFF-BREASTED PARTRIDGE. 
Ptilopachus erythrorynchus, Swains. 
Brown, speckled with whitish ; middle of the body witli a 
large fulvous white spot ; feathers of the neck and breast 
rufous in the middle, with a row of whitish spots on each 
web ; bill red. 
Ptilopachus crythrorynchus, Classif. of Birds, ii, p. 344. 
There are some peculiarities of structure in which 
this bird differs from our common partridge, the 
type of the genus Pcrdix, which has induced us to 
separate it as the representative of a sub-genus. 
The claws are considerably compressed, and the two 
lateral toes are very nearly, if not quite, of the same 
length; the tail also is much developed, and the nos- 
trils almost occupy one-half the length of the upper 
mandible. The structure of the feathers on the 
hack and rump are also peculiar, the shafts being 
thickened in the same way as in the pigeons, and 
in the corresponding type of Cellept/ris among the 
shrikes. 
Size intermediate between the quail and Par- 
tridge. Ground colour of the whole plumage 
earthen-brown, just as dark on the body as on the 
hack ; this colour is varied by dusky-white spots, in 
