. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. COE : XEMEETEANS OF WEST AND NORTHWEST COASTS. 63 hermaphroditic species are known from other parts of the world, and all of these belong to the Hoplonemertea. The sexual glands are always of simple structure, each gland con- sisting merely of a sac of sexual products situated in the parenchyma between the alimentary canal and the body musculature. The sexual glands are usually limited to the intestinal region, although in the parasitic Carcixonemeetes (Coe, : 02, p. 448) they. Fig. 27.— Carcinonemertes epialti. Trans
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. COE : XEMEETEANS OF WEST AND NORTHWEST COASTS. 63 hermaphroditic species are known from other parts of the world, and all of these belong to the Hoplonemertea. The sexual glands are always of simple structure, each gland con- sisting merely of a sac of sexual products situated in the parenchyma between the alimentary canal and the body musculature. The sexual glands are usually limited to the intestinal region, although in the parasitic Carcixonemeetes (Coe, : 02, p. 448) they. Fig. 27.— Carcinonemertes epialti. Transverse section of body, showing thick layer of submuscular glands (sgr), ovaries (ov) with large ova, and intestine {Ln) reduced to a narrow canal. extend forward nearly to the brain. In I^mplectonema biirgeri and AmpMporus occidentalis they extend forward far in front of the opening of the p3dorus into the intestine. Where metameric intestinal lobes are found the sexual glands, as a rule, alternate with them with great regularity. In compaia- tively few cases is there more than one gland between two adjacent intestinal lobes. In the parasitic Carcinonemertes, however, the intestinal lobes are much reduced and the body packed so frill of sexual glands that as many as 5 to 8 ovaries (Text-fig. 27) or 7 to 15 spermaries (Text- fig. 28) may be encountered in a single transverse section of the body. In some species of Tetrastemma and other minute hoplo- nemerteans the eggs are of comparatively large size (PI. 22, 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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