The Green Keelback, Macropisthodon plumbicolor, also called the Lead Keelback, is a species of snake found in parts of Asia. Stout and viper like in structure of body. Eye moderately large and the rostral scale is just visible from above. The suture between the internasals are as long as that between the prefrontals or a little shorter. The frontal scale is as long as its distance from the end of the snout or a little longer, as long as the parietals or a little shorter; the loreal scale is as long as deep or deeper, sometimes touching the eye; two preoculars scales and three or four postoculars; the temporals are 2 + 3 or 4; there are 7 scales on the upper lip , the third and fourth touch the eye; 4 or 5 lower labials in contact with the anterior chin-shields, which are shorter than the posterior.
