Its head is large, oviform, and very distinct from the neck; a strong, rounded supraorbital and canthal ridge is present; it has five deep concavities, a frontal, two postnasals, and two loreals; the snout is longer than the distance between the eye and the ear opening, 1.3 times the diameter of the orbit; the ear opening is vertical, measuring half the diameter of the eye.

Its head is covered with very small granules, largest on the canthal ridges; the rostral is four-sided, twice as broad as high, and its posterior border is concave; its nostrils are pierced between the rostral, the first labial, and three nasals; the anterior is large and in contact with its fellow; 12 or 13 upper and as many lower labials occur; the mental is as large as the adjacent labials, or smaller than them; no regular chin-shields are found, but small, polygonal scales pass gradually into the granules which cover the gular region.

Its upper surface is covered with minute granules; back with scattered, scarcely prominent, smooth, round, larger tubercles, hardly as large as the ventral scales; the latter flat, smooth, squarish, juxtaposed scales, arranged like the bricks of a wall.

The tail is long, cylindrical, remarkably slender, and covered with squarish scales which are much larger beneath.

In color, it is brownish-white above (golden during life), dotted or vermiculated with brown; the lower surfaces are whitish.