a. and sb. [f. as prec. + -AN.]
A. adj. Belonging to the class Crustacea.
1858. Geikie, Hist. Boulder, v. 81. The most abundant order of Crustacean life.
B. sb. An animal of this class.
1835. Kirby, Hab. & Inst. Anim., II. xiv. 26. Whether the higher Orders of Crustaceans undergo a real metamorphosis.
1873. Dawson, Earth & Man, iii. 54. The Crustaceans, the highest marine animals of the annulose type.
