112 STEJNEGER AND BARBOUR, 1933 



Rhinocheilus (GENUS) 



Baird and Girard, Cat. N. Amer. Rept., Pt. 1, 1853, p. 120 

 type: lecontei 



Rhinocheilus lecontei Baird and Girard 



Rhinocheilus lecontei Baird and Girard 



Cat. N. Amer. Rept., Pt. 1, 1853, p. 120. 

 Rhinochilus lecontei Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 931, fig. 236. 



TYPE locality: San Diego, California. 



range: Idaho to Lower California, east to Texas, northern 

 Mexico. 



Sonora (GENUS) 



Baird and Girard, Cat. N. Amer. Rept., Pt. 1, 1853, p. 117 

 type: semiannulata 



Sonera occipitalis (Hallowell) 

 Rhinostoma occipitale Hallowell 



Proe. Ac. Nat. Sci. Phila., Vol. 7, 1854, p. 95. 

 Sonora occipitalis Van Denburgh 



Proc. Calif. Ac. Sci., Ser. 4, Vol. 3, 1913, p. 411. 

 Chionactis occipitalis Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 941, fig. 240. 



TYPE locality: Mojave Desert. 



range: Southeastern California, Arizona, Colorado. 



Sonora semiannulata Baird and Girard 

 Sonora semiannulata Baird and Girard 



Cat. N. Amer. Rept., Pt. 1, 1853, p. 117. 

 Chionactis episcopus isozonus Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 939, fig. 239. 



TYPE locality: Sonora, Mexico. 



range: Idaho to Utah and Nevada, Arizona, southern Kansas 



and Texas; also southeastern California and the adjacent 



regions of Mexico. 



Sonora taylori (Boulenger) 

 Contia taylori Boulenger 



Cat. Snakes Brit. Mus., Vol. 2, 1894, pi. 12, fig. 3. 

 Sonora taylori Stejneger and Barbour 



Check List N. Amer. Amph. Rept., Ed. 1, 1917, p. 92. 

 Chionactis taylorii Cope 



Ann. Rep. U. S. Nat. Mus., 1898 (1900), p. 936. 



