Hebius frenatus
Hebius frenatus, the bridled keelback, is a species of snake of the family Colubridae. The snake is endemic to Borneo with records from Sarawak (Malaysia) and Indonesia. References 

frenatus
Reptiles of Borneo
Reptiles of Indonesia
Reptiles of Malaysia
Endemic fauna of Borneo
Reptiles described in 1923
Taxa named by Emmett Reid Dunn