Description: English: Hypnale nepa is a venomous pitviper species endemic to Sri Lanka. Date: 31 December 2016, 00:32:29. Source: Own work. Author: Buddhika.jm (Buddhika Mawella).
Description: Pelamis bicolor is left and a sea salt water snake found in Bay of Bengal The poisonous snakes of India. London:J. & A. Churchill,1878. biodiversitylibrary.org/page/12302093 The poisonous snakes of India, by Joseph Ewart (1878) For description of the snakes: https://www.biodiversitylibrary.org/page/12302141#page/5/mode/1up. Date: 5 June 2012, 08:12. Source: n67_w1150. Author: Biodiversity Heritage Library.