Malformations in Ticks

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Abstract
In 1909, and again in 1914, papers, recording cases of deformity in Ticks, were contributed to this journal, by Warburton and Nuttall, and Nuttall, respectively: since that time, numerous examples of malformation have been observed in the material examined by them and by myself, in the course of our collaboration in work on Ticks in general. Of these examples, the five which are described and figured below, are sufficiently striking to be placed on record. The figures have been drawn with the aid of the Abbe-Zeiss camera lucida, and, in each case, the degree of magnification is indicated by a scale representing a length of one millimetre.