From the North American Glass Snake it differs in having the palatine teeth small, and arranged in a very narrow band.

The upper surface of its head is covered with a large vertical plate and three smaller occipitals behind, the space between the vertical and the rostral being filled up by about five pairs of rather irregular frontals of unequal size; the superciliaries are arranged in two series.

The upper parts are brown, with some irregular black spots across the back.

We may infer, from its close resemblance to Pseudopus pallasii, that its habits are similar.

It probably lives in dry places, under stones, feeding on small lizards, mice, &c. The scaly covering of the upper and lower parts is so tight, that it does not admit of the same extension as in snakes or other lizards, and the Pseudopus, therefore, could not receive the same quantity of food in its stomach as those animals were it not for the expansible fold of the skin running along each side of its trunk.