THE ANNALS AND MAGAZINE OF NATPEAL HISTO [EIGHTH SERIES.] No. 114. JUNE 1917. XL. — Notes on CoUemhola. — Part 4. The Classification of the Collembola ; ivith a List of Genera known to occur in the British Isles. By John Wi Shoebotham^ N.D.A,, Berk-hampstedi, Herts. In ray paper ou "Some Irisli Collembola" (19l4), p. 59, I remarked that the classification adopted was one which, in the main, had been accepted by authors for the previous seven years, and that Dr. Borner had recently proposed a new system on which I should make some notes. This paper was practically completed during the early part of 1914, but my unexpected call to South Africa prevented me publishing it, and I then intended waiting till I returned to England. However, as I am about to publish a preliminary account of the Collembola of Lancashire and Cheshire, I feel it is just as well to list them according to the new system, which is much to be preferred to any yet proposed. I therefore give liere a translation of part of Borner''s paper (1913 A), pp. 318-322, which forms a key to the new classification, and I append a list of the genera of Collembola hitherto found in the British Isles. My best thanks are due to Dr. A. D. Imms, of the University of Manchester, for kindly seeing this paper through the press and for criticisms and suggestions, and to Mr. T. A. Coward, also of Manchester University, for much kind assistance. Ann. & Mcig. N. Flist. Ser. 8. Vol xix. 28
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