180 



buff; bill black, slightly spatulate, lower mandible brown, 

 the nail clouded with yellow ; lamellae of upper mandible 

 more developed than in Anas super ciliosa and slightly pro- 

 jecting beyond the lower margin of the bill ; irides yellowish- 

 brown; legs and feet orange. Wing, 10'25 ; tail, 3'65 ; cul- 

 men, 2'3 ; tarsus, 1'75 ; width of bill at base '75, at apex 1 ; 

 sex, male. Locality: Lake Albert, South Australia, January 

 16, 1899. Plate ix., fig 5. 



F. — In general colouration and markings this bird agrees 

 with Nettion gibberifrons, but in other respects, as noted, it 

 shows characters which approach those of the female of 

 Spatula rhynchotis. The feathers of the forehead, cheeks, 

 and sides of neck are tinged with buff, and their brown shaft- 

 streak is more pronounced, the scapularies and tertials are 

 more acuminate and show greenish reflections, the upper 

 wing-coverts are brown with bluish-grey margins ; the under 

 wing-coverts white, the marginal ones brown edged with 

 white; the greater row silvery-grey; four secondaries 

 metallic-green on their outer webs, the remainder olive with 

 a greenish lustre ; bill spatulate, width at base "57, greatest 

 width at apical end '8; upper mandible yellowish- 

 brown; lower mandible yellow; lamellae of upper mandible 

 well developed and projecting below to its lower margin ; legs 

 and feet orange. Wing, 7'75; tail, 4; culmen, 1*75; tarsus, 

 1*35; sex, female. Locality: Lake Alexandrina, April 11, 

 1895. Plate ix., fig. 6. 



EXPLANATION OF PLATE IX. 



Fig. 1. — Anas superciliosa. 



,, 2. — Nettion gibberifrons. 



,, 3. — Spatula rhynchotis, female. 



,, 4. — Anas superciliosa x Nettion gibberifrons. Hybrid. 



,, 5. — Anas superciliosa x Spatula rhynchotis. Hybrid. 



,, 6. — Nettion gibberifronsx Spatula rhynchotis. Hybrid. 



