Supplonent to " The Emu." ' g 



Wing 8.2 inches. H . Iciicoptera (White-winged Tern). 



67. General colour grey. Procelstonia ci)icrca (Grey Noddy). 

 General colour chocolate-brown or sooty . . . . . . 68 



68. Length 12 or 13 inches ; bill slender ]\Iicranous. 69 

 Length 16 inches; bill strong. Anoiis stoHdus (Nodd}^). 



69. Bill 1.75 inches : crown ashy-grey ; lores and cheeks grey. 



M. tenuirostris (Lesser Noddy). 

 Bill 2 inches ; crown white ; lores and cheeks black. 



M. leucocapillus (White-capped Noddy). 



70. Wing 12 inches ; bill red. Larus novce-Jwllaiidice (Silver Gull). 

 Wing 17.5 inches : bill olive or yellow. 



Gabianus pacificus (Pacific Gull). 



71. Plumage dark brown (young with rufous marks on back) ; wing 



15 to 17 inches ; centre pair of tail quills project -| inch. 



Megalestris antayctica (Skua). 

 Phunage not uniform ; wing al)out 14 inches ; centre pair of tail 



quills project 3 inches. Stercorarius 72 



72. Central tail feathers pointed and tapering ; wing 13 inches. 



S. crepidatus (Richardson Skua). 

 Central tail feathers broad and rounded ; wing over 14 inches. 



5. pomatorhinus (Pomarine Skua). 



73. Hind toe not lobed ; length either 13 inches or more than 30 . . 74 

 Hind toe broadly or narrowly lobed . . . . . . . . 78 



74. Lpper surface glossy green. Nettopus. 75 

 Plumage black and white or brownish-slate . . . . . . 76 



75. Neck dark green (male) or barred white and green (female). 



N. pnlcheUus (Green Goose-Teal). 

 Neck white (male) or narrowly barred black (female). 



N. albipennis (White-ciuilled Goose-Teal). 



76. Plumage black and white . . . . . . . . • • 77 



Plumage brownish-slate ; bill yellow. 



Cereopsis novce-hollandice (Cape Barren Goose). 



77. Plimiage black with white primaries and pink bill. 



Chenopis atrata (Black Swan). 

 Plumage black and white ; bill reddish-brown. 



Anseranas semipalmata (Pied Goose). 



78. Hind toe broadly lobed ; no metallic patch on wing . . . . 79 

 Hind toe very narrowly lobed ; often metallic patch on wing . . 81 



79. Tail feathers narrow and very stiff ; no white on wing . . 80 

 Tail feathers not stiff ; conspicuous white patch on wing. 



Nyroca anstralis (White-eyed Duck). 



80. Pouch under chin ; 24 tail feathers ; sexes similar in colour. (Too 



heavy for flight.) Bizinra lobata (Musk-Duck). 



No pouch ; 18 tail feathers ; male deep chestnut breast, female 



freckled grey. Erismatura anstralis (Blue-billed Duck). 



81. Bill flat and broad, black . . . . . . . . . . 82 



Bill high and goose-like, olive-brown. 



Chenonetta jiibala (Maned Goose or Wood-Duck). 



82. Wing II inches or over . . . . . . . . . . 83 



Wing 10 inches or under . . . . . . . . . . 84 



