Comparative zoology, structural and systematic - for use in schools and colleges (1883) (20661526772)

Autor:

Orton, James, 1830-1877;

Birge, E. A. (Edward Asahel), 1851-1950

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Title: Comparative zoology, structural and systematic : for use in schools and colleges
Identifier: comparativezool00orto (find matches)
Year: 1883 (1880s)
Authors: Orton, James, 1830-1877; Birge, E. A. (Edward Asahel), 1851-1950
Subjects: Zoology; Anatomy, Comparative; Physiology, Comparative
Publisher: New York : Harper & Bros.
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Biodiversity Heritage Library

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Text Appearing Before Image:
58 COMPARATIVE ZOOLOGY.
Text Appearing After Image:
Fig. 21.—Mouth of a Locust dissected: 1, labrum, or upper lip; 2, mandibles; 3, jaws; 4, labium, or lower lip; 5, tongue. The appendages to the maxillae and lower lip are palpi. the suctorial (as the Butterfly). In the former group, the oral apparatus consists of two pairs of horny jaws (mandibles and maxillae), which work horizontally between an upper (labrum) and an under (labium) lip. The maxillae and under lip carry sensitive jointed feelers (palpi). The front edge of the labium is commonly known as the tongue (ligula).21 In such a mouth, the mandibles are the most important parts; but in passing to the suctorial Insects, we find that the mandibles are secondary to the maxillae and labium, which are the only means of taking food. In

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• Source book page: https://archive.org/stream/comparativezool00orto/#page/n65/mode/1up

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