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Biol Bull 75: 85-98. (August 1938)
© 1938 Marine Biological Laboratory
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COPULATION IN THE ACOEligLOUS TURBELLARIAN POLYCHOEligRUS CARMELENSIS

HELEN M. COSTELLO 1 and DONALD P. COSTELLO 1

1 From the Hopkins Marine Station of Stanford University and the Zoölogy Department of the University of North Carolina

The process of mating is described for Polychoeligrus carmelensis. A study of living and fixed mating individuals, separated from their mates, indicates that copulation involves the insertion of the penis of each individual into the vaginal pocket of the mate, so that sperm are deposited directly into the dorsal chamber of the seminal bursa. Impregnation is, in some cases, reciprocal. The entire process lasts only one to one and a half minutes.






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Copyright © 1938 by the Marine Biological Laboratory.