. The transformations (or metamorphoses) of insects. Insects; Insects; Myriapoda; Arachnida; Crustacea. Adult. Larva. Hydrachna geographica. (Magnified.) weeds and bottom slowly, and seek a hole or a crevice, down which they plunge. There the metamorphosis takes place, and the six-legged larvse become motionless nymphs. The nymph stage lasts fifteen days, and then a small brilliant red eight-legged adult Limnocharis emerges. The globular water mite called Hydrachna geographica may be taken as the type of the genus Hydrachna; but M. Duges has given such interesting details respecting a closely-
. The transformations (or metamorphoses) of insects. Insects; Insects; Myriapoda; Arachnida; Crustacea. Adult. Larva. Hydrachna geographica. (Magnified.) weeds and bottom slowly, and seek a hole or a crevice, down which they plunge. There the metamorphosis takes place, and the six-legged larvse become motionless nymphs. The nymph stage lasts fifteen days, and then a small brilliant red eight-legged adult Limnocharis emerges. The globular water mite called Hydrachna geographica may be taken as the type of the genus Hydrachna; but M. Duges has given such interesting details respecting a closely-allied species, Hydrachna globula (Hermann), that we do not hesitate to take advantage of them, especially as they convey most correct impres- sions concerning the ;* The true Hydrachnce are distinguished by their beaks being as * Duges, Op. Cit., p. i6i et Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Duncan, P. Martin (Peter Martin), 1821-1891; Blanchard, Émile, 1819-1900. Metamorphoses . .. des insects. London and New York, Cassell, Petter, and Galpin
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Keywords: ., bookcentury1800, bookdecade1870, booksubjec, booksubjectcrustacea
