On the Origin and Metamorphoses of InsectsMacmillan and Company, 1874 - 108페이지 |
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abdomen animal antennæ Anthophora ants Aphis apod appearance appendages bees beetles belong Bipinnaria body branchiæ butterfly Campodea caterpillars Cecidomyia cells change of skin chrysalis ciliated closely resemble Coleoptera Collembola Comatula rosacea condition Crustacea Cynips Darwin Diptera Dragon-flies Echinoderms Echinus Egg of Platygaster Egg of Tardigrade embryo Embryology external Fabre fact feed fleshy grubs Fritz Müller gradually gsae Haeckel Hemiptera Heteroptera hexapod Homoptera Hydroids Hymenoptera insects instance jaws Julus Larva Larva of Sitaris larvæ leaves the egg Lepidoptera less Linnean Transactions Magosphæra mandibulate mature form maxillæ ment metamorphoses METAMORPHOSES OF INSECTS mouth Müller Neuroptera Orthoptera pairs of legs parasitic perfect insect Phryganea PLATE Polynema posterior pupa pupæ quit the egg regards remarkable represents reproduction rosacea rudiments segments Sitaris humeralis Society's Transactions stage Starfish Strepsiptera suctorial Tardigrade thoracic Thrips Thysanura Trichoptera vermiform wasp Westwood wings yolk Yolk-segmentation young Zaddach Zoëa
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64 페이지 - Each organism exhibits, within a short space of time, a series of changes which, when supposed to occupy a period indefinitely great, and to go on in various ways instead of one way, give us a tolerably clear conception of organic evolution in general.
43 페이지 - ... of the Carabi and Petalocera ; the thorax is next defined, and the parts or appendages of the head are formed, at which stage of development the young orthopteran corresponds with the hexapod antenniferous larva of the Meloe ; but it differs from all coleopterous...
73 페이지 - ... a mouth neither distinctly mandibulate nor distinctly suctorial, but constituted on a peculiar type capable of modification in either direction by gradual changes without loss of utility.
82 페이지 - modern Science asks. " That mass man sprung from was a jelly-lump Once on a time ; he kept an after course Through fish and insect, reptile, bird and beast, Till he attained to be an ape at last Or last but one. And if this doctrine shock...
32 페이지 - ... little for both ; and the sitaris, therefore, at its first meal, relieves itself from its only rival. After eight days the egg is consumed, and on the empty shell the sitaris undergoes its first transformation, and makes its appearance in a very different form.
40 페이지 - When an animal is hatched from the egg in an immature form, the external forces acting upon it are different from those which affect the mature form, and thus changes are produced in the young, bearing reference to its present wants rather than to its ultimate form. 7. When the external organs arrive at this final form before the organs of reproduction are matured, these changes are known as metamorphoses ; when, on the contrary, the organs of reproduction are functionally perfect before...