| 释义 |
‖ Crustacea, n. pl. Zool.|krʌˈsteɪʃ(ɪ)ə|
[mod.L. neuter pl. of crustāceus adj. (sc. animālia): see below. Introduced by Lamarck, 1801, as a name of the class of animals called by Cuvier, 1798, les insectes crustacées: cf. crustaceous 3.]
A large class of Arthropodous animals, mostly aquatic, characterized by a hard, close-fitting, usually chitinous shell or ‘crust’ which is shed periodically; comprising Crabs, Lobsters, Crayfish, Prawns, Shrimps, and many others.
1814W. E. Leach Trans. Linn. Soc. XI. 306 (title), Arrangement of the Crustacea, etc. 1828Stark Elem. Nat. Hist. II. 144 The Crustacea..respire by branchiæ..They have a distinct heart provided with circulating vessels. 1848Carpenter Anim. Phys. ii. (1872) 108 Most of the Crustacea, like insects, come forth from the eggs in a state very different from their adult form. |