94 BULLETIN 18 7, UNITED STATES NATIONAL MUSEUM 



dark cross bands, narrower tban light interspaces, which are com- 

 plete flagellum testaceus 



16. Ventrals 192 to 197, in males, 195 to 197 in females flagellum variolosus 



Ventrals 183 to 193 in males. 184 to 194 in females flagellum lineatus 



MASTICOPHIS ANTHONYI (Stejneger) 



Bascanion anthonyi Stejnegee, Proc. U. S. Nat. Mus., vol. 23, 1901, pp. 715-717. 

 Masticophis anthonyi Obtknburgek, Occ. Pap. Mus. Zool. Univ. Michigan, No. 

 139, 1923, p. 2 ; Mem. Univ. Michigan Mus., vol. 1, 1928, pp. 141-145, pi. 26. 



Type.—V.S.l^M. No. 24390. 



Type locality. — Clarion Island, Eevillagigedo Archipelago. 



Range. — The type locality. 



MASTICOPHIS AURIGULUS (Cope) 



DrymoUus aiirigtthis Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 13, 1861, p. 301. 

 Masticophis aurigulus Oktenbuegeb, Occ. Pap. Mus. Zool. Univ. Michigan, No. 

 139, 1923, p. 2. 



Type.—V.S.l^.M. No. 5793. 



Type locality. — Cape San Lucas, Baja California. 



Range. — Cape region of Baja California. 



MASTICOPHIS BARBOURI (Van Denburgh and Slevin) 



Coluber iariouri Van Denbukgh and Slevin, Proc. California Acad. Sci., ser. 



4, vol. 11, No. 6, 1921, p. £8. 

 Masticophis aurigulus Ortenbukgek, Occ. Pap. Mus. Zool. Univ. Michigan, No. 



139, 1923, p. 2. 



Type.— Calit Acad. Sci. No. 49157. 



7'ype locality. — Isla Partida, Espiritu Santo Island, Baja Cali- 

 fornia. 

 Range. — The type locality. 



MASTICOPHIS BILINEATUS Jan 



Masticophis hilineatus Jan, Elenco sistematico degli Ofidi, 1863, p. 65; Icono- 



graphie generate des ophidiens, livr. 22, 1867, pi. 6, fig. 2.— Smith, Journ. 



Washington Acad. Sci., vol. 31, 1941. pp. 389^390. 

 Bascanium semiUncatum Cope, Proc. U. S. Nat. Mus., vol. 14, 1891, pp. 622, 



626-628 (type locality, Colorado River Bottom ; type, U.S.N.M. No. 1981). 

 Masticophis setnilineatus Oetenbuegek, Occ. Pap. Mus. Zool. Univ. Michigan, 



No. 139, 1923, p. 2 ; Mem. Univ. Michigan Mus., vol. 1, 1928, pp. 48-57, pis. 11- 



13. 



Type. — Leipzig Mus. 



Type locality. — Western Mexico? 



Range. — Southeastern Arizona, extreme southwestern New Mexico, 

 and southward through eastern Sonora and western Chihuahua, Zaca- 

 tecas and Jalisco to central Oaxaca (recorded in Mexico from the 

 states of Chihuahua, Colima, Jalisco, Nayarit, Oaxaca, Sonora, and 

 Zacatecas ; a record from San Pedro, Coahuila (M.C.Z. No. 4581) seems 

 doubtful ) . 



