 | Sir Norman Lockyer - Electronic journals - 1873 - 742 pages
...resembling certain larvae which occur both in the mandibulate and suctorial series of insects, and possessing a mouth neither distinctly mandibulate,...change, without loss of utility. In discussing this suKject it is necessary also to take into consideration the nature and origin of wings. Whence are... | |
 | Sir Norman Lockyer - Electronic journals - 1872 - 540 pages
...certain larvae which occur both in the mandibulate and suctorial series of insects, and which possesses a mouth neither distinctly mandibulate nor distinctly...capable of modification in either direction by gradual changes without loss of utility. If these views are correct, the genus Campodea must be regarded as... | |
 | Sir Norman Lockyer - Electronic journals - 1872 - 540 pages
...certain larvae which occur both in the mandibulate and suctorial series of insects, and which possesses a mouth neither distinctly mandibulate nor distinctly...capable of modification in either direction by gradual changes without loss of utility. If these views are correct, the genus Campodea must be regarded as... | |
 | 1872 - 830 pages
...certain larvze, which occurs both in the mandibulate and suctorial series of insects, and which possesses a mouth neither distinctly mandibulate nor distinctly...capable of modification in either direction by gradual changes, without loss of utility. The complete metamorphosis of the Lepidoptera, Coleoptera, and Diptera,... | |
 | Linnean Society of London - Zoology - 1873 - 906 pages
...resembling certain larv» which occur both in the mandibulate and suctorial series of insects, and possessing a mouth neither distinctly mandibulate...capable of modification in either direction by gradual changes without loss of utility. Before concluding, I must say a few words about the probable nature... | |
 | Sir John Lubbock - Collembola - 1873 - 452 pages
...suctorial series of insects, in Lepidoptera, Hymenoptera, Orthoptera, and Coleoptera, and which possesses a mouth neither distinctly mandibulate nor distinctly...capable of modification in either direction by gradual changes without loss of utility. These considerations seem to me strongly to support M. Brauer's conclusion,... | |
 | Sir John Lubbock - Collembola - 1873 - 482 pages
...suctorial series of insects, in Lepidoptera, Hymenoptera, Orthoptera, and Coleoptera, and which possesses a mouth neither distinctly mandibulate nor distinctly...capable of modification in either direction by gradual changes without loss of utility. These considerations seem to me strongly to support M. Brauer's conclusion,... | |
 | Medicine - 1876 - 624 pages
...Da kommt ihm nun Campodea zu Hülfe, „which possesses a mouth neither distinctly mandibulate uor distinctly suctorial, but constituted on a peculiar...capable of modification in either direction by gradual changes without loss of Utility" (1. c., p. 52). Hiernach würden die Sugentia nicht direct von den... | |
 | Andrew Wilson - Evidence - 1883 - 408 pages
...from some more primary form of mouth, which, partaking of the character of neither, has been therefore capable of modification in either direction, "by gradual change, without loss of utility." That such a form of mouth, united to a body of equally convenient FIG. 178.— RED ANTS. a, male, and... | |
 | Books and bookselling - 1881 - 782 pages
...from some more primaryform of mouth, which, partaking of the character of neither, has been therefore capable of modification in either direction, " by gradual change, without loss of utility." That such a form of mouth, united to a body of equally convenient primitiveness, is to be found still... | |
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... could the mouth of the Hemiptera be modified into a mandibulate type like that of the Coleoptera. But in Campodea and the Collembola we have a type of animal closely resembling certain larv... 