MILLIPEDS OF MEXICO AND CENTRAL AMERICA 93 



TYPE LOCALITY: Limon, Tamaulipas, Mexico. 



PARATYPE LOCALITIES: Same, and Tepoztlan, Morelos, Mexico. 

 OTHER LOCALITIES: Ixtapan del Oro, Mexico, Mexico (Chamberlin 

 1943b). 



Hiltonius carpinus viilcan (Chamberlin). 



Aztecolus vulcan Chamberlin 1953a, p. 148; Keeton 1960a, p. 107. 



Rhinocricus vulcan Chamberlin 1953a, p. 144; Keeton 1960a, p. 107. 



Aztecolus fratrellus Chamberlin 1953a, p. 148; Keeton 1960a, p. 107. 



TYPE: Collection of R. V. Chamberlin. 



TYPE AND PARATYPE LOCALITY: Volcan Tajumulco, Guatemala. 



OTHER LOCALITY: Same locality for type of A. fratrellus. 

 Hiltonius erythrotypus Chamberlin 1943b, p. 22. 



TYPE: Collection of R.V. Chamberlin. 



TYPE LOCALITY: Santa Rosa, D.F., Mexico. 



This species is listed as"nomen inquirendum" by Keeton 1960a, p. 114. 

 Hiltonius fossulifer (Pocock). 



Spirobolus fossulifer Pocock 1908, p. 78; Keeton 1960a, p. 102. 



TYPE: British Mus. (presumed lost, Keeton 1960a, p. 105). 



TYPE AND PARATYPE LOCALITY: Omilteme, Guerrero, Mexico. 

 Hiltonius hebes (Bollman). 



Spirobolus hebes Bollman 1887, p. 31. 



Tylobolus hebes Cook 1904, p. 66; Loomis and Hoffman 1948, p. 51. 



Hiltonius balboanus Chamberlin 1941b, p. 10; Loomis and Hoffinan 

 1948, p. 51. 



TYPE: U.S. Nat. Mus. but not found recently. 



TYPE AND PARATYPE LOCALITY: San Diego, California. 



OTHER LOCALITIES: Several in San Diego Co., California (Loomis 

 and Hoffman 1948); Ceregus Canyon, Elnsenada, Baja California, Mexico 

 (Keeton 1960a). 

 Hiltonius mexicanus(Saussure). 



Julus mexicanus Saussure 1859, p. 332. 



Spirobolus mexicanus Saussure and Humbert 1872, p. 177. 



Eurelus tancitarus Chamberlin 1941d, p. 255; Keeton 1960a, p. 100. 



Hiltonius federalis Chamberlin 1943b, p. 22; Keeton 1960a, p. 100. 



Hiltonius michoacanus Chamberlin 1943b, p. 23; Keeton 1960a, p. 100. 



Hiltonius veracruzanus Chamberlin 1943b, p. 24; Keeton 1960a, p. 100. 



TYPE: Mus. Hist. Nat. Geneve. 



TYPE LOCALITY: Mexico. 



OTHER LOCALITIES: D.F., and states of Michoacan, Morelos, and 

 Veracruz, Mexico (see Keeton 1960a for exact localities). 



Genus TYLOBOLUS Cook 1904, p. 65. 



Californibolus Verhoeff 1944, p. 55; Keeton 1960a, p. 114. 

 Auxobolus Chamberlin 1949, p. 163; Keeton 1960a, p. 114. 

 TYPE SPECIES: Tylobolus deses Cook, by original designation. 



