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Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Lepidosauromorpha
Superordo: Lepidosauria
Ordo: Squamata
Subordo: Serpentes
Infraordo: Caenophidia
Superfamilia: Colubroidea

Familia: Colubridae
Subfamilia: Colubrinae
Genus: Chironius
Species: Chironius vincenti

Chironius vincenti (Boulenger, 1891)

Type locality: St. Vincent.

Holotypes: BMNH,B.

Herpetodryas carinatus var. vincenti Boulenger, 1891: 355
Herpetodryas carinatus - Garman, 1887: 284 (not of Linnaeus)
Herpetodryas vincenti - Barbour, 1914
Chironius carinatus (not of Linnaeus) - Niceforo Maria, 1942
Chironius vincenti - Schwartz and Thomas, 1975
Chironius vincenti — Schwartz & Henderson, 1991: 594
Chironius vincenti — Hollis, 2006


Boulenger, G. A. 1891. On reptiles, batrachians, and fishes from the lesser West Indies. Proc. Zool. Soc. London, 1891: 351–357.
Schwartz, A. & Henderson, R.W. 1991. Amphibians and Reptiles of the West Indies. University of Florida Press, Gainesville, 720 pp.
Hollis, J.L. 2006. Phylogenetics of the genus Chironius Fitzinger 1826 (Serpenes, Colubridae) based on morphology. Herpetologica, 62 (4): 435–452.
Chironius vincenti at the New Reptile Database. Accessed on 22 August 2008.
IUCN: Chironius vincenti (Boulenger, 1891) (Critically Endangered)

Vernacular names
English: St. Vincent Sipo

The Saint Vincent blacksnake (Chironius vincenti), also commonly known as the Saint Vincent coachwhip, the San Vincent racer, and Vincent's sipo, is a species of snake in the family Colubridae.

Geographic range

C. vincenti is endemic to Saint Vincent, an island in the Caribbean Lesser Antilles that is part of Saint Vincent and the Grenadines.[3]

The specific name, vincenti, refers to the island of Saint Vincent.[4]

C. vincenti can grow to lengths in excess of a meter (40 inches). It is slate black, with a paler mouth and ventral surface.[citation needed]

The preferred natural habitat of C. vincenti is forest, at elevations of 275–600 m (902–1,969 ft).[1]

Daltry JC, Henderson RW, Powell R (2016). "Chironius vincenti (errata version published in 2017)". The IUCN Red List of Threatened Species 2016: e.T4672A115069815. Downloaded on 12 October 2020.
Schwartz A, Thomas R (1975). A Check-list of West Indian Amphibians and Reptiles. Carnegie Museum of Natural History Special Publication No. 1. Pittsburgh, Pennsylvania: Carnegie Museum of Natural History. 216 pp. (Chironius vincenti, p. 180).
Species Chironius vincenti at The Reptile Database

Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. ISBN 978-1-4214-0135-5. ("Vincent's Sipo Chironius vincenti ", p. 275).

Further reading

Boulenger GA (1891). "On Reptiles, Batrachians, and Fishes from the Lesser West Indies". Proceedings of the Zoological Society of London 1891: 351–357. (Herpetodryas carinatus var. vincenti, new variation, p. 355).
Malhotra, Anita; Thorpe, Roger S. (1999). Reptiles & Amphibians of the Eastern Caribbean. London: Macmillan Education Ltd. pp. 101, 103. ISBN 0-333-69141-5.


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