Crotalus 響尾蛇屬
Cro·ta·lus /-ḷəs/ 名詞
Crot·a·lus n. Zool. A genus of poisonous serpents, including the rattlesnakes. ◄ ►
Crotalus n : large rattlesnakes; seldom bite unless startled or pursuing prey [syn: genus Crotalus]