20 
secondaries and distending the naked skin of the head till it extends down the neck, the colouring of it becoming much 
intensified. 
The trachea of this species is extremely long and convoluted making several complicated folds in the keel of the 
sternum as shown on the accompanying drawing. The specimen figured is in the Museum of the Zoological Society of 
Amsterdam. 
Trachea of Grus aiiiedcana. 
