80 U.S. NATIONAL MUSEUM BULLETIN 266 



Cyclothyrophorus heteropygus (Humbert and Saussure). 



Spirobolus heteropygus Humbert and Saussure 1869, p. 154; Pocock 

 1908, p. 85. 



TYPE: Mus. Hist. Nat. Geneve (H). 



TYPE LOCALITY: Cuemavaca, Mexico. 

 Cyclothyrophorus salvini Pocock 1908, p. 84. 



TYPE: British Mus. 



TYPE AND PARATYPE LOCALITY: Amula, Guerrero, Mexico. 



OTHER LOCALITY: Colima, Mexico (Hoffman, unpublished). 



After examination of the Colima specimens, R. L. Hoffman assured 

 me that the genus is an atopetholid. 

 Cyclothyrophorus valvanus (Karsch). 



Spirobolus valvanus Karsch 1881, p. 55; Pocock 1908, p. 87. 



TYPE: Zool. Mus. Berlin (H). 



TYPE AND PARATYPE LOCALITY: Puebla, Mexico. 



Genus SAUSSUROBOLUS Carl 1919, p. 389. 



TYPE SPECIES: Julus nietanus Saussure, by original designation. 

 Saussurobolus neglectus Carl 1919, p. 391. 



Spirobolus nietanus Saussure and Humbert 1872, p. 89, in part. 



TYPE: Mus. Hist. Nat. Geneve. 



TYPE AND PARATYPE LOCALITY: Cuemavaca, Morelos, Mexico. 

 Saussurobolus nietanus (Saussure). 



Julus nietanus Saussure 1860, p. 565. 



Spirobolus nietanus Saussure and Humbert 1872, p. 89. 



Cyclothyrophorus nietanus Pocock 1908, p. 84; Carl 1919, p. 390 



TYPE: Mus. Hist. Nat. Geneve. 



TYPE LOCALITY: Cuemavaca, Morelos, Mexico. 

 Saussurobolus zacatecus (Chamberlin). 



Arinolus zacatecus Chamberlin 1947b, p. 51; Hof&nan and Orcutt 

 1960, p. 147. 



TYPE: Acad. Nat. Sci. Philadelphia, no. 9974. 



TYPE LOCALITY: Sierra Temperosa del Oro, Zacatecas, Mexico. 



Genus SCOBINOMUS Loomis 1953, p. 420. 



TYPE SPECIES: Scobinomus serratus Loomis, by original designa- 

 tion. 

 Scobinomus serratus Loomis 1953, p. 420. 



TYPE: U.S. Nat. Mus., no. 2091. 



TYPE LOCALITY: Fourteen mi. north ofEnsenada, Baja California, 

 Mexico. 



PARATYPE LOCALITIES: Same, and Ceregas Canyon, 8-10 mi. from 

 Ensenada, Baja California, Mexico. 



