1814, Modern Latin neuter plural of crustaceus (animalia), literally "having a crust or shell," from Latin crusta "crust, rind, bark, hard shell" (see crust (n.)). Taken as a zoological classification by Lamarck, 1801; Cuvier (1798) had les insectes crustacées.
Examples from the Web for crustacea
This group contains the true crabs, which are the highest of the Crustacea.The Sea-beach at Ebb-tide|Augusta Foote Arnold
The mental powers of the Crustacea are probably higher than might have been expected.
The greater distinctness of the posterior segments is conformable to what takes place in the higher Crustacea.A Monograph on the Sub-class Cirripedia (Volume 2 of 2)|Charles Darwin
The usual food of Hydra consists of small insect larv, worms, and crustacea, but the eggs of fish are also devoured.Freshwater Sponges, Hydroids & Polyzoa|Nelson Annandale
The conclusion that the Crustacea and Tracheata belong to two distinct phyla is confirmed by a consideration of their development.The Works of Francis Maitland Balfour, Volume II (of 4)|Francis Maitland Balfour