Subfamily CALAENADINAE. 



This is a very small family consisting of a single genus (Calaenas) and 

 that genus of a single species, which again is divided into two subspecies, 

 one of which inhabits the Indian region. 



The subfamily differs from those already dealt with in having a tail 

 of only twelve feathers, but it agrees with the genus CarpopTiaga in having 

 an ambiens muscle and an oil-gland, but no intestiual caeca. The legs 

 are long, and both legs and feet strong and weU adapted for walking, and 

 the bUl has a fleshy protuberance at the base, more highly developed 

 in the male than in the female. The most striking external characteristic, 

 however, consists in the long metallic green hackles of the neck, which at 

 once distinguishes it from all other Pigeons. 



Genus CALAENAS. 

 Characteristics those of the subfamily. 



