Colubridae

Sonora taylori (Boulenger, 1894)

Sonora taylori is an oviparous small colubrid snake found in southern Texas and Tamaulipas, Mexico.

Sonora palarostris (Klauber, 1937)

Sonora palarostris is a nonvenomous North American snake that resembles the Sonoran coral snake, found in Arizona and Sonora.

Sonora occipitalis (Hallowell, 1854)

Sonora occipitalis, the western shovel-nosed snake, is a small desert snake found in the southwestern US and Mexico.

Sonora episcopa (Kennicott, 1859)

Sonora episcopa (ground snake) is a colubrid snake species found in the United States and Mexico.

Sonora cincta (Cope, 1861)

Sonora cincta is a colubrid snake species found in the United States and Mexico.

Sonora annulata (Baird, 1859)

Sonora annulata, the Colorado Desert shovelnose snake, is a colubrid snake native to the southwestern US and northwestern Mexico with two recognized subspecies.

Senticolis triaspis (Cope, 1866)

Senticolis triaspis is a colubrid snake found in southeastern Arizona mountains that lays clutches of up to nine eggs.

Scolecophis atrocinctus (Schlegel, 1837)

Scolecophis atrocinctus, the black-banded snake, is the only species in its colubrid genus, found in Central America.

Salvadora mexicana (Duméril, Bibron & Duméril, 1854)

The Mexican patchnose snake (Salvadora mexicana) is a colubrid snake species found in Mexico.

Salvadora lemniscata (Cope, 1895)

Salvadora lemniscata, the Pacific patchnose snake, is a colubrid snake found in Mexico.

Salvadora grahamiae Baird & Girard, 1853

Salvadora grahamiae is an oviparous colubrid snake found in the south-central US and eastern Mexico.

Salvadora bairdi Jan, 1860

Salvadora bairdi is an oviparous snake species found across multiple Mexican states, inhabiting forests, shrublands, and agricultural areas.

Salvadora deserticola Schmidt, 1940

Big Bend patchnose snake (Salvadora deserticola) is a colubrid snake found in the United States and Mexico.

Salvadora hexalepis (Cope, 1867)

Salvadora hexalepis is a striped snake native to the southwestern US and northern Mexico that lays 4–10 eggs yearly.

Salvadora lineata Schmidt, 1940

Salvadora lineata, the Texas patchnose snake, is a colubrid snake found in the US and Mexico.

Rhynchocalamus melanocephalus (Jan, 1862)

Rhynchocalamus melanocephalus, the black-headed ground snake, is a small burrowing snake with two subspecies found in the Eastern Mediterranean and Near East.

Rhinocheilus lecontei Baird & Girard, 1853

Rhinocheilus lecontei, the long-nosed snake, is a tricolor North American snake identified by its upturned snout and undivided subcaudal scales.

Rhinocheilus antonii Dugès, 1886

Rhinocheilus antonii (Mexican long-nosed snake) is a Colubridae family snake species found in Mexico.

Rhinobothryum bovallii (Andersson, 1916)

Rhinobothryum bovallii is an oviparous colubrid snake native to Central and northwestern South America that lives in forest habitats.

Ptyas mucosa (Linnaeus, 1758)

Ptyas mucosa, a common harmless rat snake across South and East Asia, is the second largest snake in Sri Lanka.

Ptyas fusca (Günther, 1858)

Ptyas fusca, the white-bellied or brown rat snake, is a colubrid snake found across parts of Southeast Asia that lives in forests.

Ptyas korros (Schlegel, 1837)

Ptyas korros (Schlegel, 1837) is a reptile species with defined physical traits, found across South and Southeast Asia up to 3000 m elevation.

Ptyas dhumnades (Cantor, 1842)

Ptyas dhumnades is a species of Ptyas found across South China, Vietnam, and Taiwan at 50–2000 m elevation.

Ptyas carinata (Günther, 1858)

Ptyas carinata, the keeled rat snake, is a large colubrid snake found across multiple Southeast Asian countries.