Source : Webster's Revised Unabridged Dictionary (1913)

Lipocephala \Lip`o*ceph"a*la\ (l[i^]p`[-o]*s[e^]f"[.a]*l[.a]),
   n. pl. [NL., fr. Gr. lei`pesqai to be lacking + kefalh`
   head.] (Zo["o]l.)
   Same as {Lamellibranchia}.