. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. 51' of the limbs, sometimes in the connecting membranes be- tween the sterna and terga); and they give off bunches of trachese, which branch and are distributed to all the organs. Generative organs.—The Myriapoda are dioecious. The ovaries and testes usually have the form of long unpaired tubes, while their ducts are often paired and are always connected with accessory glands, and in the female are sometimes provided with a double receptaculum seminis (fig. 421). The genital ope
. Elementary text-book of zoology, tr. and ed. by Adam Sedgwick, with the assistance of F. G. Heathcote. 51' of the limbs, sometimes in the connecting membranes be- tween the sterna and terga); and they give off bunches of trachese, which branch and are distributed to all the organs. Generative organs.—The Myriapoda are dioecious. The ovaries and testes usually have the form of long unpaired tubes, while their ducts are often paired and are always connected with accessory glands, and in the female are sometimes provided with a double receptaculum seminis (fig. 421). The genital open- ings lie on either side on the coxal joints of the second pair of legs, or behind this pair of appendages (Chilognatha), or, as in the Chilopoda, there is an unpaired genital opening at the posterior end of the body (fig. 422). In the male sex amongst the Chilognatha there are often external copulatory or- gans* on the 7th segment, remote from the genital open- ings. These become full of sperm before copulation, and during the coitus introduce it into the female genital open- ing. Development.—The fe- males are usually larger than the males, and lay * Besides Fabre , compare Voges, " Beiti-a^e zur Kenntuiss der Juliden," Zeittchr. fiir wiss. Zool., Tom XXXI., Ik Fio. 421. — Generative organs of Glomer>s mnrginata (after Fabre). T, Testis; Oo, ovaries; Od, Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Claus, Carl, 1835-1899; Sedgwick, Adam, 1854-1913; Sinclair, F. G. (Frederick Granville), b. 1858. London, Swan Sonnenschein & co.
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