m 



The female differs from the male only in the colour of bill and shape of casque. Both of 

 these are black. The casque rises upright from the culmen about one third from the point of 

 the maxilla, and extends to and a little over the head, and returns to the base of the maxilla 

 by an abrupt angle. It is sharp at its anterior face, but swells outwards towards the posterior 

 termination. 



Length of bill 3f inches, height 2J ; length of casque 4J, height 2^ ; wing 1C% tail 6 1 

 tarsus 1-J. 



The specimens described are in the British Museum. 



