







Bill long, curved, black, with a large red spot at base of maxilla. A curved casque rises at 

 base of culmen, and has a round opening in front ; the sides are grooved, these following the 

 curve of the casque ; as this grows from behind, it sheds off in front portions in the shape of ring's 

 and in this way retains a regular length. The entire plumage is black, with the exception of the 

 primaries, which are buff. A bare skin around the eye, continuing to the throat and part of 

 the neck in front, is deep blue, bordered on its outer edges along the neck with scarlet and 

 terminating in a kind of scarlet bag at its lowest portion. Tarsi long and, with the feet, blackish 

 Bill 9J inches, casque 3 J, height 2 ; wing 21 ■; tail 14 ; tarsus 6. 



The B. guineemis of Schlegel differs in being smaller, the casque slightly closed in front • 

 wing 18 inches ; tail 11 ; tarsus 4f-5 ; bill along gape 6§ , casque 1 inch 10 lines, height If inch' 



The B. cafer has the casque entirely closed in front. Length of bill 6f-7f inches, casque 

 1 inch 11 lines, height 11-12 lines. 



My thanks are due to the Publication Committee of the Zoological Society of London and to 

 Prof. Bocage for permission to use the woodcuts that illustrate this article. 



The figures are one third the natural size. 



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