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Subsessor bocourti (JAN, 1865)

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Higher TaxaHomalopsidae, Colubroidea, Caenophidia, Alethinophidia, Serpentes, Squamata (snakes)
Subspecies 
Common NamesE: Bocourt’s Mud Snake, Bocourt's Water Snake
G: Bocourts Wassertrugnatter
Chinese: 腹斑水蛇 
SynonymHypsirhina bocourti JAN 1865: 258
Hypsirhina multilineata TIRANT 1885 (fideSMITH 1943)
Hypsirhina gigantea WERNER 1923: 163 (fideSMITH 1928, 1943)
Hypsirhina bocourti soctrangensis BOURRET 1936 (fide fideSMITH 1943)
Enhydris bocourti — SMITH 1943: 388
Enhydris bocourti — MANTHEY & GROSSMANN 1997: 349
Enhydris bocourti — COX et al. 1998: 40
Enhydris bocourti — MURPHY 2007: 94
Enhydris bocourti — NGUYEN et al. 2009
Enhydris bocourti — WALLACH et al. 2014: 270
Subsessor bocourti — MURPHY & VORIS 2014: 34
Enhydris bocourti — CHAN-ARD et al. 2015: 239 
DistributionWest Malaysia, Cambodia, Thailand, Vietnam, China ?

Type locality: Bangkok, Thailand  
Reproductionovovivparous 
TypesSyntypes: MNHN-RA 0613–0613A (2 syntypes) 
DiagnosisDiagnosis (genus): Massive, stout body exceeds 1 m in length; dorsal scales in 27–29 rows; ventrals fewer than 136; chin shields petal-shaped, some upper labials behind the eye horizontally divided (MURPHY & VORIS 2014: 34). 
CommentDistribution: reports from China (as in ZHAO 1993) are dubious and require confirmation (Zhou and Yu 2002).

Type species: Hypsirhina bocourti JAN 1865: 258 is the type species of the genus Subsessor MURPHY & VORIS 2014: 34.

Diet: fish, frogs, crustaceans

Habitat: aquatic; swamps, shallow lakes, pools, and other stagnant water. 
EtymologyNamed after Marie Firmin Bocourt (1819-1904), French naturalist.

The genus was named after the sit-and-wait hunting strategy used by this snake. The gender is masculine. 
References
  • Beolens, Bo; Michael Watkins, and Michael Grayson 2011. The Eponym Dictionary of Reptiles. Johns Hopkins University Press, Baltimore, USA - get paper here
  • Boulenger, G.A. 1896. Catalogue of the snakes in the British Museum, Vol. 3. London (Taylor & Francis), xiv + 727 pp. - get paper here
  • Chan-ard, T., Parr, J.W.K. & Nabhitabhata, J. 2015. A field guide to the reptiles of Thailand. Oxford University Press, NY, 352 pp. [see book reviews by Pauwels & Grismer 2015 and Hikida 2015 for corrections] - get paper here
  • Cox, Merel J.; Van Dijk, Peter Paul; Jarujin Nabhitabhata & Thirakhupt,Kumthorn 1998. A Photographic Guide to Snakes and Other Reptiles of Peninsular Malaysia, Singapore and Thailand. Ralph Curtis Publishing, 144 pp.
  • Fabre, Anne-Claire; David Bickford, Marion Segall and Anthony Herrel 2016. The impact of diet, habitat use, and behaviour on head shape evolution in homalopsid snakes. Biological Journal of the Linnean Society, DOI: 10.1111/bij.12753 - get paper here
  • Geissler, Peter, Truong Quang Nguyen, Nikolay A. Poyarkov & Wolfgang Böhme 2011. New records of snakes from Cat Tien National Park, Dong Nai and Lam Dong provinces, southern Vietnam. Bonn zoological Bulletin 60 (1): 9-16 - get paper here
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  • Grismer, L.L., Neang, T., Chav, T. & Grismer, J.L. 2008. Checklist of the amphibians and reptiles of the Cardamom region of Southwestern Cambodia. Cambodian Journal of Natural History 2008(1): 12–28 - get paper here
  • HARTMANN, Timo; Flora IHLOW, Sarah EDWARDS, SOVATH Sothanin, Markus HANDSCHUH and Wolfgang BÖHME 2013. A Preliminary Annotated Checklist of the Amphibians and Reptiles of the Kulen Promtep Wildlife Sanctuary in Northern Cambodia. Asian Herpetological Research 4 (1): 36–55 - get paper here
  • Jan, G. 1865. Enumerazione sistematica degli ofidi appartenenti ai gruppo Potamophilidae. Archive per la Zoologia, l’Anatomia et la Fisiologia 3 (2): 201-265 - get paper here
  • Karns, D.R.; Murphy, J.C.; Voris, H.K. & Suddeth, J.S. 2005. Comparison of Semi-aquatic Snake Communities Associated with the Khorat Basin, Thailand. The Natural History Journal of Chulalongkorn University 5(2): 73-90 - get paper here
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  • Smith, M.A. 1928. The status of some recently described genera and species of snakes. Ann. Mag. nat. Hist. (10) 1: 494-496 - get paper here
  • Smith, M.A. 1943. The Fauna of British India, Ceylon and Burma, Including the Whole of the Indo-Chinese Sub-Region. Reptilia and Amphibia. 3 (Serpentes). Taylor and Francis, London. 583 pp.
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