TRIMERESURUS GRACILIS Small snake; total length up to 60 cm. There are 15-27 (19-21 at mid-body) rows of scales, which are keeled and rough, except for the first or second scale rows. Head is broad, roughly triangular, covered with small scales, and distinct from neck; body is stout or robust; tail is small. There is a prominent angular ridge from upper eye to end of nose, and a prominent pit between eye and nostril. Eye is medium-sized, high on head, forms slight bulge on upper head. Iris is light brown to tan dappled with dark pigment which blends with color of head, and there may be a horizontal brown to brown-black band of diffuse pigment across middle of eye, which in line with dark brown band posterior to eye.
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