. The transformations (or metamorphoses) of insects (Insecta, Myriapoda, Arachnida, and Crustacea) : being an adaptation, for English readers, of M. Émile Blanchard's "Metamorphoses, moeurs et instincts des insects;" and a compilation from the works of Newport, Charles Darwin, Spence Bate, Fritz Müller, Packard, Lubbock, Stainton, and others. uckers. The legs and claws of the different species of PJiiloptcrous orbird lice vary much in structure, on account of the peculiar con-ditions in which the parasites are placed and live. One genus,which has a species parasitic on the porpoise—the only ma
. The transformations (or metamorphoses) of insects (Insecta, Myriapoda, Arachnida, and Crustacea) : being an adaptation, for English readers, of M. Émile Blanchard's "Metamorphoses, moeurs et instincts des insects;" and a compilation from the works of Newport, Charles Darwin, Spence Bate, Fritz Müller, Packard, Lubbock, Stainton, and others. uckers. The legs and claws of the different species of PJiiloptcrous orbird lice vary much in structure, on account of the peculiar con-ditions in which the parasites are placed and live. One genus,which has a species parasitic on the porpoise—the only marine 410 TRANSFORMATIONS OF INSECTS. parasitic true insect—is very degraded in its structures and develop-ment ; and the forms classified as Goniodes are also remarkablefor their defective organisation, as well as for the presence of a clawupon the antennae of the males. The philosophical naturalist may-ponder with interest upon the absence of the metamorphoses inthese parasitic creatures, and consider their evident anatomical,and therefore classificatoiy relation with those spiders which havetracheae as their respiratory organs ; and he must be struck withthe anatomical relations of these groups with the other insects thatundergo incomplete or imperfect metamorphoses. The TJiysaiinra or skip tail tribe are small insects which are. THE FISH SCALE. {Lepisnia saccharin a.) THE SKIP TAIL. {Podlira pliivibea.) better known on account of the beauty of their microscopic bodyscales than for any interesting habits or instincts. They do notundergo metamorphosis, and are wingless. Sir John Lubbocks careful researches have resulted in hisbeing satisfied that in the genus SiuyntJuirus there are tracheaefor respiratory purposes, and that they communicate with theexternal air by means of spiracles, which are not situated alongthe margins of the thorax, but in the head, where it is attachedto the body.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjec, booksubjectcrustacea
