Cephaloptera \Ceph`a*lop"te*ra\, n. [NL., fr. Gr. ? head + ? wing.] (Zo["o]l.) One of the generic names of the gigantic ray ({Manta birostris}), known as {devilfish} and {sea devil}. It is common on the coasts of South Carolina, Florida, and farther south. Some of them grow to enormous size, becoming twenty feet of more across the body, and weighing more than a ton.