92 STEJNEGER AND BARBOUR, 1917 



Sonora (GENUS) 



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

 type: semiannulata 



Sonora episcopa (Kennicott) 

 Lamprosoma episcopuvi Kennicott 



U. S. Mex. Bound. Surv., Vol. 2, 1859, Rept. p. 22, pi. 8, fig. 2. 

 Sonora episcopa Van Denburgh 



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

 Chionactis episcopus Cope 



Ann. Rep. U. S. Nat. Mus. 1898 (1900), p. 937, fig. 238. 



TYPE locality: Eagle Pass, and between San Antonio and the 



Rio Grande, Texas. 

 RANGE : Texas to southeastern Cahfornia and the adjacent regions 



of Mexico, 



Sonora occipitalis (Hollowell) 

 Rhinostoma ocdpilale Hallowell 



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

 Sonora occipitalis Van Denburgh 



Proc. California 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 : Utah to Nevada, Arizona, southern Kansas and Texas. 



Sonora taylori (Boulenger) 

 Contia taylori Boulenger 



Cat. Snakes Brit. Mus., Vol. 2, 1894, p. 265, pi. 12, fig. 3. 

 Chionactis taylorii Cope 



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



TYPE locality: Duval County, Texas, and Nuevo Leon, 



Mexico. 

 RANGE : Southern Texas and northeastern Mexico. 



