Note 54 — Chapter XI

An interesting case of a similar nature has recently been published by Hasebroek (Die Umschau, 1913, p. 1020). A melanic form of the moth, Cymatophora or, suddenly appeared near Hamburg in 1904. This new form, to which the name albingensis was given, rapidly became the predominant one. In 1911-1912 over 90% of the moths reared from caterpillars taken in the open were of the albingensis form; nor were any intermediates found between it and the typical form. Some experiments were also made which shew that the albingensis form behaves as a dominant to the original type form.