For this purpose Mr. Bernard considered it necessary to get a live crotalus or two into his possession, if this were possible.
"Elsie Venner" by Oliver Wendell Holmes, Sr.
I make this statement as to the fatality of crotalus poison advisedly.
"Scientific American Supplement, No. 841, February 13, 1892" by Various
We, too, are frightened, for we hear the dreaded rattle of the crotalus!
"The Scalp Hunters" by Mayne Reid
Referring to Plate I, we find, in exactly the same relative situation, the forked tongue and the rattles of the crotalus.
"Studies in Central American Picture-Writing" by Edward S. Holden