Oligodon calamarius

Oligodon calamarius is a species of nonvenomous colubrid endemic to Sri Lanka. It is known as කබර දත්-කැටියා (kabara dath ketiya) in Sinhala.

Etymology
Oligodon templetoni, now a junior synonym of Oligodon calamarius, was named in honour of Irish naturalist Dr. Robert Templeton who obtained the first known specimen.

Description
O. calamarius is a terrestrial snake from lowlands of the wet zone, reaching montane limits, up to 1,800 m. The head is short, scarcely distinct from the neck. The pupil of the eye is round. The dorsum is light brown with a light vertebral stripe. There are 18–24 narrow dark brown, light-edged cross-bands that are either complete or half-way cross the back. The venter is cream, with square black markings. The forehead has a dark crescentric marking and an elongated spot behind it.

Distribution
O. calamarius is known from Udugama in the Southern Province, Hewissa and Mathugama in the Western Province, Ratnapura and Balangoda in the Sabaragamuwa Province, and Peradeniya in Central Province.