64 ANATID^. 



changiug into chocolate olive-brown on the rump ; upper wing- 

 coverts blue ; primaries brown ; secondaries olive-brown, with a 

 slight bluish tinge near the edge of the outer web ; tertiaries olive- 

 brown, edged with black on the outer web ; under wing-coverts 

 brown, washed with duU lead-blue ; tail brown : " iris jellowish 

 brown ; bill black, with a broad subterminal yellow band ; legs 

 brown" (Emin Fasha). Total length about 22 inches, wing 11, 

 tail 5, culmen l-So, tarsus 1-8. 



I have seen altogether seven specimens of this scarce species, and 

 there appears to be no difference between the sexes ; in some speci- 

 mens the white frontal patch is wanting. 



JJab. West Africa from the Gold Coast to Alima on the Conga 

 {Mus. Paris), eastwards as far as Tingasi. 



a. Ad. St. Gaboon. P. DuChaillu [C.]. 



b. Ad. sk. Gould Coll. 



c. (S ad. sk. Tingasi, Equat. Afr., July. Emin Pasha [C.]. 



11. NETTOPUS. 



Type. 



Nettapus, Brandt, Descr. et Icon. Anini. Hoss. 



JVov., Aves, fasc. i. p. 5 (1836) N. auritus. 



Ariserella, Sw. Class. B. ii. p. 189 (1837) .... N. coromandelianus. 

 Cheniscus, Broke, MS. {nee Moehr.) ; Eyt. Mon. 



Anat. p. lo (1838) N. coromandelianus. 



Microcygna, G. It. Gr. List Gen. B. p. 73 



(1840) N. coromandelianus. 



Nettopus, Agass. Nomencl. ZooL, Ind. Univ. 



p. 249 (1846). 

 Cheniskus, Agass. 



Range. From Tropical Africa and Madagascar, through India and 

 Malacca, to China and Eastern Australia. 



Key to the Species. 



a. Sides aud lower part of the neck rufous; male 



with a large sea-green patch on the sides of the 

 hind part of the head ; female without the sea- 

 green patch aud with sides of the head white, 

 speckled with black auritus, p. 65. 



b. Sides white, with no rufous tinge. 



a'. Sides with crescent-like bands ; neck dark green 



in the male, banded with white and green in 



the female ^jwMe/ZMS, p. 67. 



v. Sides waved with narrow grey lines ; neck 



white : male with a broad black band across 



the breast ; female with no broad black band 



across the breast, but the neck with narrow 



black bands all round. [p. 68. 



a". Smaller : wing 6';j coromandelia7ius, 



b" . Larger : wing 7"5 albipennis, p. 72. 



