92 STEJNEGER AND BARBOUR, 1933 



Heterodon nasicus Baird and Girard 



Ileterodon jiasicus Baird and Girard 



Stansbury's Expl. Surv. Vail. Great Salt Lake, 1852, p. 352. 

 Heterodon nasicus Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 772, fig. 168. 



TYPE locality: Texas. 



range: Southwestern Iowa, Kansas and Nebraska west to Mon- 

 tana and south to northern Mexico. Common along the Mexi- 

 can border from Texas to Arizona. 



Heterodon simus (Linne) 



Coluber simus Linne 



Syst. Nat., Ed. 12, Vol. 1, 1766, p. 375. 



Heterodon simus Holbrook 



N. Amer. Herp., Ed. 2, Vol. 4, 1842, p. 57, pi. 15. 



Heterodon simus Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 770, fig. 167. 



TYPE locality: Carolina. 



range: Southeastern States, Indiana to Florida. 



Liopeltis (GENUS) 



FiTziNGER, Syst. Rept., 1843, p. 26 

 type: tricolor 



Liopeltis vemalis (Harlan) 

 SMOOTH GREEN-SNAKE 

 Coluber vernalis Harlan 



Journ. Ac. Nat. Sci. Phila., Vol. 5, 1827, p. 361. 

 Liopeltis vernalis Cope 



Proc. Ac. Nat. Sci. Phila., 1860, p. 500. 

 Liopeltis vernalis Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 782, fig. 169. 



TYPE locality: Pennsylvania and New Jersey are mentioned 

 as habitat. 



range: Southern Canada through the Eastern and Middle 

 States south to Florida and Texas, New Mexico. North Da- 

 kota and Colorado. 



