EXPLANATION OF PLATE XVIII. 
Fig. 1. Nycticorax calgdonicus, Latham. 
Nankeen Night Heron. 
Fig. 2. Ardea pacipica, Latham. 
Pacific Heron. 
Fig. 3. Botaukcs poici-lopterus, Wagler. 
Australian Bittern. 
Fig. 4. Butoroides flavicollis, Latham. 
Yellow-necked Mangrove-Bittern. 
Fig. 5. Demiegretta sacra, Gindin. 
Blue Beef Heron. 
Fig. C. Butoroides macrorhyncha, Gould. 
Thick-billed Mangrove Bittern. 
