PLATE XXI. 



A 







\. 2, Head and leg of White-headed Stilt (Himantopus leucocephalu*) . 3, 4, Ditto of Banded Stilt 



(Cladorhynchus lencocephalus). 5, 6, Ditto of Red-necked Avocet (Recurvirostra novcehollandice). 



All reduced to two-thirds natural size. 



