The Collaborative International Dictionary of English v.0.48:

Xanthochroi \Xan*thoch"ro*i\, n. pl. [NL. See Xanthochroic.]
   (Ethnol.)
   A division of the Caucasian races, comprising the
   lighter-colored members.
   [1913 Webster]

         The Xanthochroi, or fair whites, . . . are the
         prevalent inhabitants of Northern Europe, and the type
         may be traced into North Africa, and eastward as far as
         Hindostan.                               --Tylor.
   [1913 Webster]