U. beddomi is named after Richard Henry Beddome (1830–1911), British army officer and botanist.

The dorsum of U. beddomii is brown, with a yellow streak on each side of the neck.

The longest specimen in the type series collected by Col. Beddome is a female 27.5 cm (10+3⁄4 in) in total length (including tail).

The rostral is strongly compressed, keeled above, the portion visible from above two fifths the length of the shielded part of the head.

The end of the tail is subtruncate, convex, or somewhat flattened dorsally, the scales with 3 to 5 strong keels.