Vol. XXVII, pp. 87-88 
May 11, 1914 
PROCEEDINGS 
OK TUK 
BIOLOGICAL SOCIETY OF WASHINGTON 
A NEW RACE OF THE MANDARIN DUCK FROM SOUTH¬ 
ERN JAPAN. 
BY AUSTIN U. CLARK. 
A specimen of the mandarin duck from tlie Island of Kiusiu, 
Japan, and another from Shanghai, in the collection of the 
U. S. National Museum appear to represent a recognizable race, 
which may be known as 
Aix galericulata brunnescens sub«p. nov. 
Characters .—This siibs])ecies differs from the typical form in liaving the 
central stripe in the elongated feathers of the neck distinctly hnffy instead 
of white; in having the black posterior border of the eidarged innermost 
tertial from 4 mm. to 5 mm. in width instead of from 2 mm. to d mm.; 
in having the border of tlie upper mandible adjacent to the sides of the 
face inclined anteriorly instead of being nearly perpendicular to the edge.s 
of the maxilla; and in being slightly larger. 
The wing in the specimen from Kiusiu (No. 114,761) U. S. N. M.) 
measures 240 mm., and in the specimen from Shanghai (No. 107,150 U. 
S. N. AI.) 235 mm. 
The wdng in a specimen of Air (jalericulata galericulata from Hakodate 
(No. 120,679 U. S. N. AI.) measures 220 mm.; in another from Sagami 
Bay (No. 109,463 U. S. N. AI.) 220 mm.; and in a third, a tame bird 
(No. 168,903 U. S. N. AI.), 221 mm. 
Tgpe.—'So. 114,766 U. S. N. AI., from Kiusiu, Japan. 
18— Choc. Biol. Soc. W.\sit., Vol. XXVII, 1911. 
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