Genus CROCOPUS. 
This genus contains but one species which is, however, easily 
divisible into three geographical subspecies with well-defined char- 
acteristics which overlap no more than such characteristics generally 
do where the respective ranges meet. 
This genus, with the exception of Butreron, is the largest of our 
Indian “ Green Pigeons,” having a wing of about 7.5 in., whereas none 
of the others exceed 7 in., and some are under 6. Itis also,in one form 
or another, the most widespread, being found throughout the greater 
part of the countries with which we are now dealing. 
A very distinctive feature of this bird is its yellow legs and feet, 
all our other species of this subfamily having red legs and feet. 
Key to the Subspecies. 
A. Breast yellow; abdomen grey; upper tail-coverts and 
base of tail both yellowish and not contrasting... C. ph. phoenicopterus. 
B. Yellow of fore-head extended to crown; upper tail- 
coverts grey contrasting with yellowish base of tail _C. ph. viridifrons. 
C. Under-parts unicoloured yellow; tail-feathers with very 
little or no trace of yellowish-green... ae, ... C. ph. chlorogaster. 
