Description,— Adult male. General colour black, inclining to dull umber on the 

 abdomen ; axillary tufts bright yellow ; terminal half of the two outer pairs of tail- 

 quills white ; middle pair of tail-quills greatly elongated and spirally twisted ; irides 

 dark hazel ; bill and feet black. 



Adult female. Similar in colour to the male, but with the middle pair of tail-feathers 

 not nearly so much elongated or twisted. 



Dimensions.— Adult male. Total length 12-5 inches, wing from carpal joint 5-95, 

 culmen 1'25, tarsus 1*5, tail 7*5. 



Adult female. Total length 9-5, wing from carpal joint 4, culmen -95, tarsus 1-25, 

 tail 5-95. 



