GENERIC CHARACTERS 



Family BUCEB0TXM2. 



Subfamily Bucorvinae. 

 Genus I. BUCORVUS. 

 Head crested. Nude skin around the eyes, on sides of neck, and throat, with a pendent 

 nude gular pouch. Bill long, powerful, curved, terminating in a sharp point. Nostrils basal, 

 exposed. Casque large, extending from base of culmen for about one third its length, rising 

 considerably above the maxilla, curved or straight, and open or closed anteriorly. Wings ample, 

 reaching one third the length of the tail. Fifth primary longest, fourth and sixth next longest 

 and equal. Tail long, ample, rounded. Legs long ; tarsi covered with scales ; toes rather short ; 

 claws short, strong. 



Subfamily Bucerotinse. 

 Genus I. BUCEROS. 

 Head slightly crested. Nude skin around eye. Bill long, powerful, terminating in a sharp 

 point ; culmen much curved. Casque very large, two thirds the length of the bill, rounded 

 on the upper edge, straight, or much curved upward anteriorly. Nostrils small, basal, lateral, 

 and hidden. Wings rather short ; fourth and fifth primaries nearly equal and longest. Tail 

 long, rounded. Tarsi short, robust, covered with strong broad scales. Toes of moderate length, 

 the outer and inner ones united at base. Claws strong, curved, acute. 



Genus II. DICHOCEROS. 

 Eeathers on occiput moderately lengthened. Bill very long, stout, powerful, pointed at tip ; 

 culmen and gonys much decurved. Casque very broad, covering basal half of culmen, flat, 

 concave anteriorly, with the corners turned slightly upwards into miniature horns projecting 

 forwards. Nostrils small, basal, open. Bare skin around eyes. Wings ample, reaching one 

 third the length of the rectrices. Tail long, broad, rounded. Tarsi short, stout, covered with 

 large scales. Toes short, united at base by a membrane. Claws strong, acute. 



Genus III. HYDROCORAX. 



Head moderate, crested. Bill rather short, stout, pointed, much curved toward the tip. 

 Casque extending two thirds the length of the maxilla, flat, wide at the posterior end, rather 

 pointed anteriorly. Nostrils basal, small. Nude skin around eyes. Wings ample, rather long ; 

 fourth, fifth, and sixth primaries equal and longest. Tail long and rounded. Tarsi short, 

 stout, covered with strong scales. Claws strong, curved, acute. 



Genus IV. RHINOPLAX. 



Occiput crested. Eace, throat, neck, and spot on centre of back naked. Bill short, straight, 

 stout, pointed. Casque solid, covering half the maxilla, broad on its anterior face, curved on 



