Borikenophis sanctaecrucis Cope, 1862:76

Saint Croix racer, St Croix tree snake



Taxonomy & Nomenclature

Synonym/s: Alsophis sancticrucis Cope, 1862:76 (orthological error); Dromicus sanctae-crucis Cope, 1862:76; Alsophis sanctaecrucis Cope, 1862:76; Borikenophis sancticrucis Cope, 1862:76


Conservation Status


Last record: "Probably extinct since around 1898" (Uetz et al.)

IUCN RedList status: Critically Endangered (Possibly Extinct)



St. Croix & Green Cay, U.S. Virgin Islands


Biology & Ecology




Syntype: ANSP 5405






Original scientific description:

Cope, E. D. (1862). Synopsis of the species of Holcosus and Ameiva, with diagnoses of new West Indian and South American Colubridae. Proceedings of the Academy of Natural Sciences, Philadelphia 14: 60-82.


Other references:

Day, David. (1981). The Doomsday Book of Animals: A Natural History of Vanished Species. New York, N.Y.: The Viking Press.

Hedges, S. Blair, Couloux, Arnaud and Vidal, Nicolas. (2009). Molecular phylogeny, classification, and biogeography of West Indian racer snakes of the Tribe Alsophiini (Squamata, Dipsadidae, Xenodontinae). Zootaxa 2067: 1-28.

Henderson, R. W. and Powell, R. (1996). Alsophis sanctaecrucis. Catalogue of American Amphibians and Reptiles 634: 1-2.

Henderson, R.W. and Powell, R. 2009. Natural History of West Indian Reptiles and Amphibians. University Press of Florida, Gainesville, Florida, USA.

Joseph-Ouni, M. (2006). Profiles of extinction #20 - St. Croix Racer, Alsophis sanctaecrucis. Reptilia (GB) (46): 82.

Platenberg, R. and Powell, R. (2016). Borikenophis sanctaecrucis. The IUCN Red List of Threatened Species 2016: e.T40791A71740001. Downloaded on 17 December 2016.

Powell, Robert and Henderson, Robert W. (2012). Island lists of West Indian amphibians and reptiles. Bulletin of the Florida Museum of Natural History 51(2): 85-166. [considers this taxon possibly extinct]

Regalado, Pedro Galán. (2015). Los Anfibios y Reptiles Extinguidos: Herpetofauna Desaparecida Desde el Año 1500. Monografías de la Universidade da Coruña 155: 1-509.

Schwartz, A. (1966) Snakes of the genus Alsophis in Puerto Rico and the Virgin Islands. Studies on the Fauna of Curacao and Other Caribbean Islands, 90, 177–227.

Uetz, P. et al., The Reptile Database,, accessed December 11, 2010.


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