The Collaborative International Dictionary of English v.0.48:

Scincoidian \Scin*coid"i*an\, n. (Zool.)
   Any one of numerous species of lizards of the family
   Scincidae or tribe Scincoidea. The tongue is not extensile.
   The body and tail are covered with overlapping scales, and
   the toes are margined. See Illust. under Skink.
   [1913 Webster]