122 STEJNEGER AND BARBOUR, 1933 



Thamnophis eques (Reuss) 



Coluber eques Reuss 



Mus. Senckenberg. Abh., Vol. 1, 1834, p. 152, pi. 8, fig. 2. 

 Thamnophis eques Ruthven 



Bull. U. S. Nat. Mus., No. 61, 1908, p. 158. 

 Eutaenia eques Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 1049, figs. 291-293. 



TYPE locality: Mexico. 



range: Utah, Arizona, New Mexico and Texas, southward to 

 Guatemala. 



Thamnophis marcianus (Baird and Girard) 

 Eutainia marciana Baird and Girard 



Cat. N. Amer. Rept., Pt. 1, 1853, p. 36. 

 Thamnophis marcianus Ruthven 



Bull. U. S. Nat. Mus., No. 61, 1908, p. 58. 

 Eutaenia elegans marciana Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 1044, fig. 289. 



TYPE locality: "Red River, Arkansas" [Oklahoma]. 

 range: Oklahoma and Texas west to southeastern California, 

 northeastern Mexico. 



Thamnophis megalops (Kennicott) 

 Eutaenia megalops Kennicott 



Proe. Ac. Nat. Sci. Phila., 1860, p. 330. 

 Thamnophis megalops Ruthven 



Bull. U. S. Nat. Mus., No. 61, 1908, p. 44. 

 Eutaenia megalops Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 1025, fig. 278. 



TYPE locality: Tucson and Sta. Magdalena, Arizona. 

 range: The whole Mexican plateau region north to Texas, 



southwestern New Mexico and Arizona, and the Cocopah 



Mountains, Lower California. 



Thamnophis ordinoides ordinoides (Baird and Girard) 

 Tropidonoius ordinoides Baird and Girard 



Proe. Ac. Nat. Sci. Phila., Vol. 6, 1852, p. 176. 

 Thamnophis ordinoides Ruthven 



Bull. U. S. Nat. Mus., No, 61, 1908, p. 147. 

 Eutaenia elegans ordinoides Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 1046. 



TYPE locality: Puget Sound. 



range: Coastal region of California, Oregon, and Washington. 



