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A crotalus (Spanish: matraca), [1] [2] also known as a crotalum or clapper, is a wooden liturgical rattle or clapper that replaces altar bells during the celebration of the Tridentine Paschal Triduum at the end of Lent in the Catholic Church.
Their sound is rather like a small tuned bell, only with a much brighter sound and a much longer resonance. Similar to tuned finger cymbals, crotales are thicker and larger; they also have slight grooves in them. The name comes from the Greek crotalon, for a castanet or rattle.
Timber rattlesnake, Crotalus horridus This is a list of all sure genera, species and subspecies of the subfamily Crotalinae, [1] otherwise referred to as crotalines, pit vipers, or pitvipers, and including rattlesnakes Crotalus and Sistrurus.
The generic name Crotalus is derived from the Greek word κρόταλον krótalοn, 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. [3] As of July 2023, 44 [4] to 53 [5] species are recognized as valid.
Sistrurus species differ from the larger rattlesnakes of the genus Crotalus in a number of ways. They are smaller in size, but also their scalation is different: Sistrurus species have nine large head plates (same as Agkistrodon), whereas in Crotalus (and almost all other viperids), the head is mostly covered with a large number of smaller scales.
Rattlesnake skin has a set of overlapping scales that cover the entire body, providing protection from a variety of threats, including dehydration and physical trauma. [63] The typical rattlesnake, genus Crotalus, has the top of its head covered with small scales, except, with a few species, a few crowded plates directly over the snout. [64]
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Often, the sound of rattles forms a connection to the supernatural world when the rattles are employed by shamans. The use of the raven rattle, like the one pictured to the right, always implies power, which when used in dances, symbolize the status of the chief, who has a hereditary right to use the rattle.