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The Collaborative International Dictionary
Crotalus

Crotalus \Crot"a*lus\ (-l?s), n. [NL., fr. Gr. ???? rattle.] (Zo["o]l.) A genus of poisonous serpents, including the rattlesnakes.

Wikipedia
Crotalus
Common names: rattlesnakes, rattlers.

Crotalus is a genus of venomous pit vipers found only in the Americas from southern Canada to northern Argentina, colloquially known as rattlesnakes. The name is derived from the Greek word krotalón, which means "rattle" or "castanet", and refers to the rattle on the end of the tail which makes this group (genera Crotalus and Sistrurus) so distinctive. Currently, 32 species are recognized.

Usage examples of "crotalus".

Was Elsie Venner, poisoned by the venom of a crotalus before she was born, morally responsible for the "volitional" aberrations, which translated into acts become what is known as sin, and, it may be, what is punished as crime?

Still higher and farther west lay the accursed ledge,--shunned by all, unless it were now and then a daring youth, or a wandering naturalist who ventured to its edge in the hope of securing some infantile Crotalus durissus, who had not yet cut his poison teeth.

Bernard considered it necessary to get a live crotalus or two into his possession, if this were possible.

There is now to be seen in a tall glass jar, in the Museum of Comparative Anatomy at Cantabridge in the territory of the Massachusetts, a huge crotalus, of a species which grows to more frightful dimensions than our own, under the hotter skies of South America.

The naturalists drew up a paper on the "Probable Extinction of the Crotalus Durissus in the Township of Rockland.