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Chironius bicarinatus.jpeg
Chironius bicarinatus
Chironius scurrulus (Yasuni).jpg
Chironius scurrulus
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Suborder: Serpentes
Family: Colubridae
Subfamily: Colubrinae
Genus: Chironius
Fitzinger, 1826

22, See text.

Chironius is a genus of New World colubrid snakes, commonly called sipos (from the Portuguese word cipó for liana), savanes, or sometimes vine snakes. There are 22 described species in this genus with the last species being described in 2015.


The following 22 species are recognized as being valid.[1]

Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Chironius.


The specific names, brazili and spixii, are in honor of Brazilian herpetologist Vital Brazil and German biologist Johann Baptist von Spix, respectively.[2]

Conservation status[edit]

The St. Vincent Blacksnake, Chironius vincenti is listed as critically endangered by the IUCN Red List due to its extremely limited range on the Island of St. Vincent.


  1. ^ "Chironius ". The Reptile Database.
  2. ^ 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. (Chironius brazili, p. 37; Chironius spixii, p. 250).

Further reading[edit]

  • Fitzinger LI (1826). Neue Classification der Reptilien nach ihren natürlichen Verwandtschaften. Nebst einer Verwandtschafts-tafel und einem Verzeichnisse der Reptilien-Sammlung des K. K. zoologischen Museum's zu Wien. Vienna: J.G. Heubner. five unnumbered + 67 pp. + one plate. (Chironius, new genus, p. 60). (in German and Latin).
  • Freiberg M (1982). Snakes of South America. Hong Kong: T.F.H. Publications. 189 pp. ISBN 0-87666-912-7. (Chironius, pp. 30, 64, 92).

External links[edit]