The testes are located in posterior part of the head and the first somite of the thorax. Long vasa deferentia lead from the thorax to the end of the abdomen and then back to the eighth thoracic somite where the male gonopore is located. Ovaries occupy the entire thorax in females, with the gono-
pore on the sixth thoracic somite. When mature the ovary also extends into the abdomen. Eggs are carried in a brood pouch formed by a lobe of the female carapace, although deposition of the eggs in this location has never been observed. When shed from the brood pouch, the young have five pairs of thoracic limbs beyond the maxilliped and look like miniature adults.
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