84 STEJNEGER AND BARBOUR, 1923 



Diadophis regalis regalis (Baird and Girard) 



Diadophis regalis Baird and Girard 



Cat. N. Amer. Rept., Pt. 1, 1853, p. 115. 

 Diadophis regalis regalis Blanchard 



Occ. Papers Mus. Zool. Univ. Michigan, No. 142, July 9, 1923, p. 1. 

 Diadophis regalis Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 744, fig. 155. 



TYPE locality: Sonora, Mexico. 



range : Central Texas, to southeastern Arizona and to the state 

 of Vera Cruz, Mexico. 



Diadophis regahs arizonae Blanchard 



Diadophis regalis arizonae Blanchard 



Occ. Papers Mus. Zool. Univ. Michigan, No. 142, July 9, 1923, p. 2. 



TYPE locality: Sabino Canon, Arizona. 

 RANGE : Central Arizona to northern Sonora. 



Heterodon (GENUS) 



Latreille, Hist. Nat. Rept., Vol. 4, 1802, p. 32 

 type: platirhinos = contortrix 



HOG-NOSE SNAKES 



Heterodon browni Stejneger 



Heterodon browni Stejneger 



Proc. Biol. Soc. Washington, Vol. 16, 1903, p. 123. 



type locality: Lemon City, Florida. 

 range: Extreme southern Florida. 



Heterodon contortrix (Linne) 

 PUFFING ADDER, SPREADING ADDER 



Boa contortrix Linne 



Syst. Nat., Ed. 12, Vol. 1, 1766, p. 373. 

 Heterodon contortrix Stejneger and Barbour 



Check List N. Amer. Amph. Rept., Ed. 1, 1917, p. 76. 

 Heterodon platyrhinus Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 761, fig. 165. 



TYPE locality: Carohna. 



range : Massachusetts to Florida westward to Texas and north- 

 ward through the states of the Mississippi basin to Minnesota. 



