steganophthalmata

from The Century Dictionary.

• The covered-eyed acalephs, a division containing those jelly-fishes whose sensory tentaculicysts are covered with flaps or lappets proceeding from the margin of the disk: contrasted with Gymnophthalmata.

from the GNU version of the Collaborative International Dictionary of English.

• noun plural (Zoöl.) The Discophora, or Phanerocarpæ. Called also Steganophthalmia.