Crotalus
(krōt′ăl-ŭs )
[L. crotalum, fr. Gr. krotalon, rattle, castanet]
A genus of venomous snakes of the family Crotalidae that includes most rattlesnakes.
Crotalus atrox
Crotalus helleri
The Southern Pacific rattlesnake (a pit viper whose range is the southwestern US). Its venom contains a potent nerve toxin.



Taber's Medical Dictionary