The Collaborative International Dictionary
Scyllarian
Scyllarian \Scyl*la"ri*an\, n. (Zo["o]l.) One of a family ( Scyllarid[ae]) of macruran Crustacea, remarkable for the depressed form of the body, and the broad, flat antenn[ae]. Also used adjectively.
Wiktionary
scyllarian
n. (context zoology English) Any of the family Scyllaridae of macruran crustaceans with depressed body and broad, flat antennae.