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Biol Bull 47: 298-303. (November 1924)
© 1924 Marine Biological Laboratory
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THE MANNER OF COPULATION IN A TURBELLARIAN WORM, PLANARIA MACULATA

ROBERT A. BUDINGTON

1. Planaria maculata, and probably many other triclad Turbellaria, mate with both copulants oriented in the same manner.

2. Impregnation is mutual, and simultaneous.

3. During copulation the vasa deferentia are much distended by their sperm contents, while the uterus may act temporarily as a sperm receptacle only.






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Copyright © 1924 by the Marine Biological Laboratory.