Source : Webster's Revised Unabridged Dictionary (1913)

Edriophthalma \Ed`ri*oph*thal"ma\, n. pl. [NL., fr. Gr. ?
   steadfast + ? the eye.] (Zo["o]l.)
   A group of Crustacea in which the eyes are without stalks;
   the Arthrostraca. [Written also {Edriophthalmata}.]