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• Aquatic Macros

1.            Worm lacking an anterior oraface; arrow shaped head with pair of eyespots. . . .                 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Turbellaria

               Worm capable of extending a long proboscus; head not arrow shaped with                several pairs of eyespots; usually associated with base of plants . .  Nemeritea

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