Source : Webster's Revised Unabridged Dictionary (1913)

Generically \Ge*ner"ic*al*ly\, adv.
   With regard to a genus, or an extensive class; as, an animal
   generically distinct from another, or two animals or plants
   generically allied.

Source : WordNet®

generically
     adv 1: without a trademark or brand name; "we market these drugs
            generically"
     2: as sharing a common genus; "these animals are not related
        generically"