THE BIOLOGY O F WOOD-BORING TEREDINID MOLLUSCS
395
PIO. 29. Nuwitoru hedlkyi. Section through a part of the gonad in the active female
phase. ( x 300.)
FIG. 30. Nausitora hedleyi. Section of a hermaphrodite gonad giving evidenes of the
concurrent production of gametes of both sexe8 in the same follicle. ( x 300.)