264 LLOYD'S NATURAL HISTORY. 
very old examples; the bars, spots, and markings gradually 
disappearing with age. 
To facilitate identification the twenty-one species and two 
sub-species comprising this genus may be divided as follows :— 
I. Leg (metatarsus) longer than the middle toe and claw. 
A, Entire breast transversely barred with black; belly 
immaculate; sexes different in plumage. 
a. Chin and throat black or barred with black 
(females). 
6. Chin and throat white, the feathers on the 
sides narrowly edged with black (males) 
(species 1 to 4, pp. 265-270). 
Bb. Middle of breast not transversely barred with black ; 
throat never black. (Plumage of sexes similar in one 
group,-but slightly different in the other section.) 
c. Middle feathers of the tail lengthened, 
pointed a.d edged with white or buff. 
a’. Feathers of the mantie and back 
edged with white or buff, giving the 
back a scaly appearance. Plumage 
of sexes practically similar, 
a’, Middle of breast and belly, imma- 
culate ; sides spotted or barred 
with black (species 5-7, pp. 
270-275). 
6°. Middle of breast and beliy with 
round black spots on most of 
the feathers (species 8, p. 275). 
6. Feathers of the mantle and back prac- 
tically uniform (species 9, p. 276). 
d@d. Middle tail-feathers not lengthened and 
pointed, nor edged with white or buff; 
feathers of the back without any scaly 
appearance. Sexes somewhat different in 
plumage. 
