Lyresnakes are relatively long, thin snakes with a large head and noticably large eyes. In Cave Creek, adults may reach around 3′ in length, though most that we have documented are smaller. Their pattern is a blotched brown or tan with chevrons going down the body, and a distinctive “lyre” shape on the head, for which they are named.

Lyresnakes are slightly venomous, though not medically significant to humans. A bite from this species should still be avoided, however, as the venom can be moderately painful for a short time. They should not be considered dangerous, however, since a bite from a Lyresnake is almost certainly caused by intentional handling.