Painted Keelback Xenochrophis cerasogaster is a species of Colubrid snake found in Pakistan, Nepal, Bangladesh and India (Assam, Uttar Pradesh). This snake is also called the "Dark Bellied Marsh Snake."


See snake scales for terminology

Head narrow, elongate, with angular canthus rostralis and slightly concave lores; eye moderate or rather small. Rostral once and one third to twice as broad as long; suture between the internasals nearly as long as that between the prefrontals; frontal much longer than its distance from the end of the snout, as long as the parietals; lorealas long as deep or a little longer than deep; one preocular; two or three postoculars and one or two sub-oculars ; temporals 2+2 or 2+3 ; upper labials 9, fourth (rarely fifth) entering the eye; 5 or 6 lower labials in contact with the anterior chin-shields, which are as long as the posterior or a little shorter. Scales strongly keeled, in 19 rows, ventrals 140-151; anal divided; subcaudals 60-70. Brown above, with or without darker spots and with a more or less distinct paler dorso-lateral band, lower parts cherry-red to purplish black, with a yellowband on each side extending irom the lips to the end of the tail. Total length 2 feet, tail 5.5 inches.[1]


  1. Boulenger, G. A. 1890.' 'The Fauna of British India, Including Ceylon and Burma. Reptilia and Batrachia.

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