The Collaborative International Dictionary of English v.0.48:

Mephitinae \Mephitinae\ prop. n.
   A subfamily of mammals including the skunks; it is a
   subdivision not used in some classifications.

   Syn: subfamily Mephitinae.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Mephitinae
    n 1: subdivision not used in some classifications: skunks [syn:
         Mephitinae, subfamily Mephitinae]