98 GREY-HEADED SENEGAL KINGHUNTER. 
described by Brisson ; it is one of the most splendid 
of this genus, having the remarkable peculiarity 
(which is, however, shared with the next species) 
of the bill possessing two distinct colours, the upper 
mandible being of the richest crimson, while the 
lower one is jet black. 
General plumage on the upper part of the body 
rich light blue, excepting the head and upper part 
of the neck, which are cinereous grey, darkest on the 
front and crown, and gradually blending on the 
upper neck with the blue of the interscapulars ; 
over each eye is a greyish white line, which begins 
at the nostrils, and terminates just above the eye ; 
the eye itself is surrounded with a black ring united 
to a patch of the same colour between the eye and 
the bill ; the upper mandible appears entirely crim- 
son, but its sides, just at the rictus, are black ; the 
ears, sides of the neck, middle of the breast, and 
flanks, are shaded with light cinereous, minutely 
freckled or crossed with delicate lines and spots of a 
darker colour : this part of the plumage is prismatic, 
and reflects a delicate tint of green. All the rest of 
the under plumage is white. The tail, the scapu- 
lars, and the largest portion of the quills, are light 
blue. The rest of the quills, and the whole of the 
covers, are deep black ; inner wing-covers, and half 
of the quills beneath, white ; feet, and under aspect 
of the tail, deep black. 
Total length, 9 inches ; bill, from the front, 1 5 ; 
ditto, from the gape, 2j' s ; wings, 4 ; tail beyond, 
If ; ditto from the base, 2f . 
