Colubridae Oppel, 1811
Thamnophis angustirostris Kennicott, 1860
Thamnophis atratus Kennicott, 1860
Thamnophis bogerti Rossman & Burbrink, 2005
Thamnophis brachystoma Cope, 1892
Thamnophis butleri Cope, 1889
Thamnophis chrysocephalus Cope, 1885
Thamnophis conanti Rossman & Burbrink, 2005
Thamnophis couchii Kennicott, 1859
Thamnophis cyrtopsis Kennicott, 1860
Thamnophis elegans Baird & Girard, 1853
Thamnophis eques Reuss, 1834
Thamnophis exsul Rossman, 1969
Thamnophis fulvus Bocourt, 1893
Thamnophis gigas Fitch, 1940
Thamnophis godmani Günther, 1894
Thamnophis hammondii Kennicott, 1860
Thamnophis lineri Rossman & Burbrink, 2005
Thamnophis marcianus Baird & Girard, 1853
Thamnophis melanogaster Wiegmann, 1830
Thamnophis mendax Walker, 1955
Thamnophis nigronuchalis Thompson, 1957
Thamnophis ordinatus (Linnaeus, 1766)
Thamnophis ordinoides Baird & Girard, 1852
Thamnophis proximus Say, 1823
Thamnophis radix Baird & Girard, 1853
Thamnophis rossmani Conant, 2000
Thamnophis rufipunctatus Cope, 1875
Thamnophis sauritus Linnaeus, 1766
Thamnophis scalaris Cope, 1861
Thamnophis scaliger Jan, 1863
Thamnophis sirtalis Linnaeus, 1758
Thamnophis sumichrasti Cope, 1866
Thamnophis valida Kennicott, 1860
