Abstract
THE classification of insects has passed through JL many changes, and most of the systems proposed have been primarily based upon characters afforded by the wings, mouth-parts, and metamorphoses. During the last fifteen years entomology has suffered from an over-exercise of the analytic faculty on the part of morphologists. One result of, their activities is seen in the increasing number of subdivisions of the class Insecta, and some eminent authorities even dismember the latter as a whole. The tendency is to o emphasise differences rather than the features which groups reveal in common. In some cases the same morphological characters in different orders are not credited with proportional values. The result, as might be anticipated, is a condition of instability with no very clear conception of what is to be regarded as an order and what is not.
Manual of Entomology: with Special Reference to Economic Entomology.
By Prof. H. Maxwell Lefroy. Pp. xvi + 541 + 4 plates. (London: E. Arnold and Co., 1923.) 35s. net
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I., A. Manual of Entomology: with Special Reference to Economic Entomology. Nature 112, 857–858 (1923). https://doi.org/10.1038/112857a0
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DOI: https://doi.org/10.1038/112857a0
