A new species of "cypris y" (Crustacea: Facetotecta) is described from Tanabe Bay on the Pacific coast of Japan under the name Hansenocaris furcifera. The nauplius of this new species is "nauplius y type IX" sensu Ito. A possible penis is recognized in the Facetotecta for the first time, represented by an apically bifurcate process on the ventum of the first abdominal somite. External features of various body parts are described in detail based upon observations with a scanning electron microscope. New terms are proposed to describe certain structures.
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Tatsunori Itô (1989) studied this question.
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