CHECKLIST OF THE SNAKES OF MEXICO 129 



Sonora michoacanensis michoacanensis Stickel, Proc. Biol. Soc. Washington, vok 

 56, 1943, pp. 113-116. 



Type.— Lost ; neotype, Brit. Mus. No. 1903.3.21. 



Type locality. — "Michoacan." 



Range. — Probably the higher elevations of the lower Rio Balsas 

 Basin (known only from Hacienda California (near Apatzingan), 

 Michoacan., Chilpancingo, Guerrero., and 10 miles south of TaxcOj 

 Guerrero) . 



SONORA MICHOACANENSIS MUTABILIS Stickel 



Hornalocranium miclioacanense Gunther, Biologia Centrali-Americana, Rept. 



Batr., 1895, pp. 104, 150, pi. 36, figs. B, C. 

 Sonora michoacanensis Dunn, Amer. Mus. Nov., No. 314, 1928, p. 2. — Taylor, 



Herpetologica, vol. 1, 1937, pp. 71-72, pi. 6, fig. 2. 

 Sonora miclwacancnsis mutahilis Stickel, Proc. Biol. Soc. Washington, vol. 56, 



1943, pp. 116-117. 



Type.—E. H. Taylor-H. M. Smith Coll. No. 4661. 



Type locality. — Magdalena, Jalisco. 



Range. — Southern portion of the main plateau, from western cen- 

 tral Jalisco through southern Zacatecas to Distrito Federal (recorded 

 only from Distrito Federal; Mezquital del Oro, Zacatecas; and the type 

 locality). 



SONORA MOSAUERI Stickel 



Sonora mosaueri Stickel, Copeia, 1938, No. 4, pp. 189-190 ; Proc. Biol. Soc. Wash- 

 ington, vol. 56, 1943, p. 119. 



Type.— Mus. Vert. Zool. No. 13772. 

 Type locality. — Comondu, Baja California. 



Range. — Central Baja California (recorded only from the vicinity 

 of Comondu). 



♦SONORA SEMIANNULATA SEMIANNULATA Baird and Girard 



Sonora semianmaata Baird and Girard, Catalogue of North American reptiles, 



1853, p. 117. 

 Sonora semianmaata semiannulata Stickel, Copeia, 1938, No. 4, p. 185 (part); 



Proc. Biol. Soc. Washington, vol. 56, 1943, pp. 119-120. 



^y^e.—U.S.N.M. No. 2109. 



Type /ocaZi%.— Restricted to the Santa Rita Mountains, Ariz, (orig- 

 inally stated "Sonora"). 



Range.— Kwo^n only from the Santa Rita Mountains of Arizona; 

 probably occurs in adjacent Sonora. 



SONORA SEMIANNULATA BLANCHARDI Stickel 



Sonora semianmaata Uanchardi Stickel, Copeia, 1938, No. 4, pp. 185-186; Proc. 

 Biol. Soe. Washington, vol. 56, 1943, p. 121. 



Type.— Vniv. Mich. Mus. Zool. No. 83122. 



Type locality. — Northeastern slopes of the Chisos Mountains, Brew- 

 ster County, Tex. 



