| drymarchon | (n) a genus of Colubridae, Syn. genus Drymarchon |
| eastern indigo snake | (n) a variety of indigo snake, Syn. Drymarchon corais couperi |
| indigo snake | (n) large dark-blue nonvenomous snake that invades burrows; found in southern North America and Mexico, Syn. gopher snake, Drymarchon corais |