. 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. come unitedto the last segment of the thorax or body, or for several of themto conjoin and leave very faint traces of their former distinctness. Take as an example a kind of lepidopterous insect—a moth—whose metamorphosis, so far as regards the shape of t
. 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. come unitedto the last segment of the thorax or body, or for several of themto conjoin and leave very faint traces of their former distinctness. Take as an example a kind of lepidopterous insect—a moth—whose metamorphosis, so far as regards the shape of the caterpillarand perfect insect is less than is usual. The large Attacns pavoniania^or is admirably adapted for our purpose. The abdomen of the caterpillar commences at the fourth seg-ment of the body, as in all other insects, and is formed of nine nearlyequal rings ; the last but one is, however, shorter than the others, STRUCTURES IMPLICATED IX METAMORPHOSIS. 13 and the body ends in a tubercle. Their consistence is the samethroughout, and the constituent membrane is ahnost homoge-neous. The third, fourth, fifth, sixth, and the ninth segments ofthe abdomen have a pair of tubercles furnished with spines ontheir underneath or ventral surface. These tubercles, which aredestined to disappear when the insect passes into the chrysalis. LARVA, OR CATERlILLAR.
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Keywords: ., bookcentury1800, bookdecade1870, booksubjec, booksubjectcrustacea
