Cychrus cylindricollis is a species of ground beetle in the subfamily of Carabinae.

The body show a brilliant black with irregular small streaks and granulation.

Elytra are globose, fused together; the second pair of wings is atrophied.

It lives at an elevation of 1,800–2,000 metres (5,900–6,600 ft) above sea level.

The narrow and elongated head and thorax allow this coleopter to penetrate into the shells of the snails.