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Cerrophidion
:''Common names: Montane pitvipers.〔Campbell JA, Lamar WW. 2004. ''The Venomous Reptiles of the Western Hemisphere''. Comstock Publishing Associates, Ithaca and London. 870 pp. 1500 plates. ISBN 0-8014-4141-2.〕''
''Cerrophidion'' is a genus of venomous pitvipers which are endemic to southern Mexico, Central America, and western Panama.〔 The generic name, ''Cerrophidion'', is derived from the Spanish word ''cerro'', which means "mountain", and the Greek word ''ophidion'', which means "small snake".〔 Four species are currently recognized, but no subspecies.
==Description==
These snakes grow to a maximum total length of (for ''C. godmani''), but usually do not exceed . The head scalation is highly variable, with some scales being enlarged, especially in the frontal region. The fact that the prelacunal is not fused with any of the supralabial scales is characteristic for this genus. The rest of the scalation is as follows: 1-7 intersupraoculars, 7-11 supralabials, 8-12 sublabials, 120-150 ventral scales, 22-36 subcaudal scales (undivided), and 17-21 rows (rarely 23) of dorsal scales at midbody.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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