The eastern range of the night snake extends to Texas. The Eastern range of the night snake extends to Texas. Hypsiglena torquata, commonly known as the night snake, is a species of rear-fanged colubrid. The night snake is also known to inhabit mammal burrows. The night snake ("Hypsiglena torquata") is a species of rear-fanged colubrid snake. The night snake ("Hypsiglena torquata") is a species of rear-fanged, colubrid snake.