The Collaborative International Dictionary of English v.0.48:

Tanrec \Tan"rec\, n. (Zool.)
   Same as Tenrec.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Tenrec \Ten"rec\, n. [From the native name: cf. F. tanrac,
   tanrec, tandrec.] (Zool.)
   A small insectivore (Centetes ecaudatus), native of
   Madagascar, but introduced also into the islands of Bourbon
   and Mauritius; -- called also tanrec. The name is applied
   to other allied genera. See Tendrac.
   [1913 Webster]