Perdix Brisson, Orn., i p. 219 (1760).
Type, Tetrao per dice Linn.
This genus, of which the Common European Partridge is the type, is represented in India by one species which just enters our limits from Tibet.
In Perdix the wing is rounded ; the first primary between the seventh and eighth in length, the fourth rather the longest; the tail of sixteen feathers in our Indian bird, eighteen in some of the others, is equal to rather more than half the wing in length and is very slightly graduated; the tarsus is strong but has no spur. The genus extends throughout the Palaearctic region.
Key to Subspecies.
A.Nucha] collar broad and dark chestnut in colour.
a. Black of cheek extended as collar below throat…………..P. h. hodgsoniae, p. 423.
b. Black of cheeks not extended to throat………….P. h. sifanica, p. 425.
B.Nuchal collar narrow and of paler chestnut-yellow…………. P. h. caraganae, p. 425