On a new form of the genus Psephotus
Notes from the Leyden Museum , Volume 32 - Issue 1 p. 71- 72
This apparently new form, which is a subspecies of Psephotus chrysopterygius Gould (Proc. Zool. Soc. London, 1857, p. 220), much resembles Psephotus dissimilis Collett (Proc. Zool. Soc. London, 1898, p. 350), differs however in the male by its deep black forehead, crown, nape and lores, these parts being dark chestnut in dissimilis, which is likely a local form of chrysopterygius. Lately the Leyden Museum was presented with a male, which died in the aviaries of Mr. F. E. Blaauw at ’s Graveland and some days ago I saw three living males and two females in the possession of the same gentleman; these males agree perfectly with the skin in our possession. As no trace of a dark chestnut at the head can be observed in any of the examples and as the males, when being in imperfect plumage, also did not show this colour on the head, these specimens evidently belong to an undescribed form, which I wish to call in honour of our well-known favourer: Psephotus chrysopterygius blaauwi. As above stated the males agree with the description of the male of Psephotus chrysopterygius dissimilis Collett, only the forehead, crown, nape and lores are not dark chestnut, but pure black. Our skin measures: wing 124, tail 167 mm.
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van Oort, E.D. (1910). On a new form of the genus Psephotus. Notes from the Leyden Museum, 32(1), 71–72.