The Collaborative International Dictionary of English v.0.48:

Specie \Spe"ci*e\,
   abl. of L. species sort, kind. Used in the phrase in specie,
   that is, in sort, in kind, in (its own) form.
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         "[The king] expects a return in specie from them" [i.
         e., kindness for kindness].              --Dryden.
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   In specie (Law), in precise or definite form; specifically;
      according to the exact terms; of the very thing.
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