fVf 



i 



succeeding ridges horny yellow, furrows blackish brown ; bare orbital skin pale smalt-blue ; gular 

 skin white, tinged with greenish blue. 



" In the female the entire plumage (except the tail, which is pure white) is jet-black, glossed 

 on the wings and back with dull metallic green ; the male differs in having the front of the neck 

 below the bare gular patch a somewhat pale rufous buff, while the whole of the rest of the head 

 and neck are bright chestnut-coloured " {Hume, loc. cit.). 



The following are the measurements as given by Mr. Hume : — 



"Male. — Length 26 inches, expanse 41*5 ; tail from vent 8'25 ; wing 12 ; wings when closed 

 reach to within 4*5 of end of tail ; tarsus 2*05 ; middle toe to root of claw 2*5 ; claw only, straight 

 from point to base, 07 ; bill from nostril to point 4'5, bill from posterior margin of casque to 

 point, straight, 5*0; length of casque only, 2*67; greatest height of upper mandible including 

 casque 1*4, of casque only 0*6. Weight 1 lb. 3 oz. 



"Female.— Length 24 inches, expanse 37*75 ; tail from vent 8*0; wing 10'75 ; tarsus 1*8 ; 

 middle toe to root of claw 1*4 ; claw only, straight from point to base, 0*55 ; bill from nostril to 

 point 3*6; bill from posterior margin of casque only, 2'6; greatest height of upper mandible 

 including casque 1*25, of casque only 0'6. Weight 1 lb." 



