180 WHITE IBIS. 



bill ; claws dusky, tipped with horn colour. Plumage pure white, ex- 

 cepting the ends of from three to five of the outer primaries, which are 

 deep black, with blue and green reflexions. 



Length to end of tail 24^ inches, to end of wings 27, to end of claws 

 31| ; extent of wings 40 ; wing from flexure 12^; tail 4| ; bill along 

 the back 5^, along the edge 5| ; bare space of tibia 1|, tarsus 3;^, middle 

 toe 2|, its claw |. Weight 2 lb. 



The adults vary considerably in size, and remarkably in the length 

 of the bill. The extent of the bare space on the head varies according 

 to age. In the breeding season the bill and legs are bright carmine ; 

 during the rest of the year paler. 



Young bird killed in September. Flate CCXXII. Fig. 2. 



In its first plumage this species is of a dull brown colour all over, ex- 

 cepting the rump, which is whitish, and the tail, which is tinged with 

 grey. 



After the first moult, the bill is pale yellowish-orange, toward the 

 base greenish ; the naked parts of the head are pale orange-yellow, in- 

 clining to flesh-colour ; the eye dark brown ; the feet pale blue. The 

 plumage is of a dull olivaceous brown, the quills darker, the tail ra- 

 ther lighter, the hind part of the back white, the breast and abdomen 

 white. 



The Crayfish represented in the plate will be found described in the 

 article entitled " the White Perch and its favourite bait." 



