Cantoria violacea, commonly known as Cantor's Water Snake, is a species of snake found in tropical Asia.


Frontal a little longer than broad, shorter than its distance from the end o£ the snout or than the parietals; eye between four shields, a preocular, a supraocular, a postocular, and a subocular; loreal longer than deep ; one elongate anterior temporal, in contact with the postocular and the subocular; 5 upper labials ; 3 lower labials in contact with the anterior chin-shields, which are not longer than the posterior. Scales in 19 rows. Ventrals 266-278; anal divided; subcaudals 56-64. Blackish above, with white transverse bands, which widen towards the abdomen; these bands are very narrow in the typical form, wider in the var. dayana, but constantly much narrower than the black interspaces ; Home white spots on the head; lower partn white, with greyish spots, the continuation of the dorsal cross bands ; these bands may form complete rings on the tail.[1] Total length 3 feet: tail 4 inches.


Myanmar, southern Thailand, Indonesia (Kalimantan, Sumatra, Timor), India (Andaman Islands), western Malaysia (Malaya), and Singapore.


  1. Boulenger, G. A. 1890. Fauna of British India. Reptilia and Batrachia.


  • Boulenger, George A. 1890 The Fauna of British India, Including Ceylon and Burma. Reptilia and Batrachia. Taylor & Francis, London, xviii, 541 pp.
  • Frith,C.B. & Boswell,J. 1978 Cantor's Water Snake, Cantoria violaecea Girard, a vertebrate new to the fauna of Thailand. Nat. Hist. Bull. Siam Soc. (Bangkok) 27: 187-189
  • Ghodke, Sameer and Harry V. Andrews 2002 Recent record of Cantoria violacea (Girard, 1857) from North and Middle Andaman Islands, India with a note on its bite. Hamadryad. 26 (2):371-373 [2001]
  • Girard,C. 1858 Descriptions of some new Reptiles, collected by the US. Exploring Expedition under the command of Capt. Charles Wilkes, U.S.N. Third Part. Proc. Acad. nat. Sci. Philad. 9: 181-182 [1857]

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