The Collaborative International Dictionary of English v.0.48:

Homophyly \Ho*moph"y*ly\, n. [Homo- + Gr. ? a clan.] (Biol.)
   That form of homology due to common ancestry (phylogenetic
   homology), in opposition to homomorphy, to which genealogic
   basis is wanting. --Haeckel.
   [1913 Webster]