The Collaborative International Dictionary of English v.0.48:

Melene \Mel"ene\, n. [Melissic + ethylene.] (Chem.)
   An unsaturated hydrocarbon, C30H60, of the ethylene series,
   obtained from beeswax as a white, scaly, crystalline wax; --
   called also melissene, and melissylene.
   [1913 Webster]