Hooknose snakes are typically a grey or olive green in color, with brown or black blotching down the back, and a cream colored underside. They grow to a length of Template:Convert and have a distinct upturned snout, which is similar to that of hognose snakes (genus Heterodon), and is used to aid in burrowing in loose, sandy soil. The dorsal scales are smooth (keeled in Heterodon), and the anal plate is divided.
- Ficimia hardyi (Mendoza-Quijano, 1993) – Hardy's hook-nosed snake
- Ficimia olivacea (Gray, 1849) – Mexican hook-nosed snake
- Ficimia publia (Cope, 1866) – blotched hook-nosed snake
- Ficimia ramirezi (Smith & Langebartel, 1949) – Ramirez's hook-nosed snake
- Ficimia ruspator (Smith & Taylor, 1941) – Guerreran hook-nosed snake
- Ficimia streckeri Taylor, 1941 – Strecker's hook-nosed snake
- Ficimia variegata (Günther, 1858) – Tehuantepec hook-nosed snake
- ↑ Schmidt, K.P. and D.D. Davis. 1941. Field Book of Snakes of the United States and Canada. G.P. Putnam's Sons. New York.