Abstract
THIS is a second most important Swedish work, which illustrates in a striking manner the remarks which we made in noticing M. Thomson's “Skandinaviens Coleoptera.” In this the author has commenced a monographic revision of the Swedish members of one of the most difficult families of insects, the Ichneumonidæ, which he here treats in an almost exhaustive fashion. We cannot venture to say how far he is correct in his synonymies, or in the reference of supposed species to others as varieties; but he has spared no pains in the preparation of his descriptions, and the student of his book will find no difficulty in understanding precisely what he means. This work, when completed, will be an invaluable aid to the few entomologists who venture upon the study of the Ichneumonidæ.
Ichneumonologia Suecica,
auctore Aug. Emil Holmgren. Tom. II. (Stockholm, 1871. London: Williams and Norgate.)
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D., W. Ichneumonologia Suecica . Nature 5, 100 (1871). https://doi.org/10.1038/005100a0
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DOI: https://doi.org/10.1038/005100a0