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  1. By: Watson, Arnold T
    Type: Article
    In: The Journal of the Linnean Society of London. Zoology
    Volume: 28
    Issue: 181
    Date: 1901
    Page Range: 230--260
    Publication Info: London, Academic Press [etc.], 1865-1968
  2. By: Watson, Arnold T
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 14
    Series: 6
    Date: 1894
    Page Range: 43--44
    Publication Info: London Taylor and Francis, Ltd