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Biol Bull 81: 205-214. (October 1941)
© 1941 Marine Biological Laboratory
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SPECIFICITY AND HOST-RELATIONS IN THE TREMATODE GENUS ZOÖGONUS

HORACE W. STUNKARD 1

1 From the Department of Biology, New York University, and the Marine Biological Laboratory, Woods Hole, Mass.

Encysted metacercaniae of Zoögonus are reported from the seaurchin, Psammechinus miliaris, at Wimereux, France. Comparison with descriptions of other larval Stages found at Roscoff and Marseilles indicates that all belong to the same species. Attempts to infect sea-urchins at Woods Hole with the American form of Zoögonus were only partially successful. Bionomic and morphological differences between the European and American representatives of Zoögonus are discussed. It appears probable that they belong to different species.






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Copyright © 1941 by the Marine Biological Laboratory.