...Jerdon says: "some are recorded4 feet along the curvature; the basal antler 10 to 12 inches or more... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
... Nostrils basal, oval, open, covered externally with incumbent setaceous feathers...
William Swainson 「Zoological Illustrations, Volume I」
...Wings yellow, anterior above black, with an oblique yellow band and transverse basal line; posterior margin yellow...
William Swainson 「Zoological Illustrations, Volume I」
...Spire elongated, chesnut-brown; base of the spiral volutions with a whitish band, which is central on the basal whorl...
William Swainson 「Zoological Illustrations, Volume I」
...Nostrils broad, basal, nearly naked, the aperture much nearer the tip than the gape of the bill...
William Swainson 「Zoological Illustrations, Volume I」
... Nostrils simple, basal, roundish, entirely concealed by thick-set incumbent feathers...
William Swainson 「Zoological Illustrations, Volume I」
...Nostrils basal, simple, round, situated near the margin, the base with a few short incumbent setaceous feathers...
William Swainson 「Zoological Illustrations, Volume I」
...Bill longer than the head, thick, light, curved, thickened at the basal margin, the frontal angle obtuse, the margins serrated...
William Swainson 「Zoological Illustrations, Volume I」
...Shell ovate-acute, white, with transverse punctured striæ; the basal whorl thick, with numerous bands consisting of small, and two of large tessellated spots; outer lip toothed...
William Swainson 「Zoological Illustrations, Volume II」
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