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Plate4.16 Portion of a sperm-sac exhibiting a streaky and granular aspect from the varying nature of the contents
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Plate4.14 Cephalic ganglia of Tetrastemma flavida
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Plate3.9 Stylets of Tetrastemma flavida
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Plate2.9 Structure of the stylet-region in Tetrastemma flavida
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Dorsal view of anterior portion of bodyCoe, W. R. (1901). The Nemerteans of the Expedition. Proceedings of the Washington Academy of Sciences, Vol. 3, 1-110.
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Tetrastemma bilineatum: habitus
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Tetrastemma quadrilineatum: habitus
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Tetrastemma reticulatum: habitus
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Tetrastemma reticulatum: Anterior portion of body of individual of the variety with confluent markings
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Tetrastemma signifer: habitus
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Tetrastemma signifer: Dorsal view of the head, showing typical form of cephalic marking
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Tetrastemma signifer: Side view of head, showing position and extent of characteristic cephalic marking