BAL^ENICEPS REX. 
are much extended longitudinally. On the under jaw is a fold of 
skin, which probably is capable of extension into a sort of poucli. 
The toes are without webs, and the tibia is black beset with pro- 
portionally very small marked scales. The skin round the eye is 
bare and yellow. Nape feathers lengthened to a short crest. The 
colour of the whole plumage is ash-grey, on the upper side darker 
than on the belly and thighs. 
