EXPLANATION OF PLATE XXI. 
Fig. 1. Sterna fui.iginosa, Gmelin. 
Sooty Tern. 
Fig. 2. Anous stoltdus, Linnams. 
Noddy. 
Fig. 3. Puffinus nugax, Soland. 
Allied Petrel. 
Fig. 4. Gyois Candida, Gmelin. 
White Tern. 
Fig. 5. Anods melanogenys, G. R. Gray. 
Black-cheeked Noddy. 
Fig. 6. Anods cineueds, Gould. 
Orey Noddy. 
