| Tantilla | |
|---|---|
| Tantilla gracilis, flathead snake | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Reptilia |
| Order: | Squamata |
| Suborder: | Serpentes |
| Family: | Colubridae |
| Subfamily: | Colubrinae |
| Genus: | Tantilla Baird & Girard, 1853 |
| Synonyms | |
| |






Tantilla is a large genus of harmless New World snakes in the family Colubridae. The genus includes 66 species, which are commonly known as centipede snakes, black-headed snakes, and flathead snakes.
Tantilla are small snakes, rarely exceeding 20 cm (8 inches) in total length (including tail). They are generally varying shades of brown, red or black in color. Some species have a brown body with a black head.
Tantilla are nocturnal, secretive snakes. They spend most of their time buried in the moist leaf litter of semi-forested regions or under rocks and debris.
The diet of snakes of the genus Tantilla consists primarily of invertebrates, including scorpions, centipedes, spiders, and various insects.
Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Tantilla.