The Collaborative International Dictionary of English v.0.48:

Acetabulifera \Ac`e*tab`u*lif"e*ra\, n. pl. [NL. See
   Acetabuliferous.] (Zool.)
   The division of Cephalopoda in which the arms are furnished
   with cup-shaped suckers, as the cuttlefishes, squids, and
   octopus; the Dibranchiata. See Cephalopoda.
   [1913 Webster]