MILLIPEDS OF MEXICO AND CENTRAL AMERICA 79 



Family ATOPETHOLIDAE 



Genus ATOPETHOLUS Chamberlin 1918b, p. 167. 



Orthichelus Chamberlin and Hoffman 1950, p. 7: Hoffman and Orcutt 



1960, p. 133. 

 T\'PE SPECIES: Atopetholus califomicus Chamberlin, by original 

 designation. 

 Atopetholus nigrescens (Chamberlin). 



Onychelus nigrescens Chamberlin 1923a, p. 407; Hoffman and Orcutt 



1960, p. 139. 

 TYPE: Mus. California Acad. Sci., no. 1265. 

 TYPE LOCALITY: Isla Coronados, Gulf of California, Mexico. 



Genus CENTRELLUS Cook 1911a, p. 154. 



Toltecolus Chamberlin 1943b, p. 27; Hoffman and Orcutt 1960, p. 123. 



TYPE SPECIES: Centrellus falcatus Cook, by original designation. 

 Centrellus falcatus Cook 1911a, p. 156. 



TYPE: U.S. Nat. Mus., no. 800. 



TYPE AND PARATYPE LOCALITY: Guanajuato, Mexico. 

 Centrellus kerrensis (Chamberlin and Mulaik). 



Eurellus kerrensis Chamberlin and Mulaik 1941, p. 61; Hoffman and 

 Orcutt 1960, p. 124. 



Toltecolus garcianus Chamberlin 1943b, p. 27; Hoffman and Orcutt 

 1960, p. 124. 



TYPE: Collection of R. V. Chamberlin. 



T\PE AND PARATYPE LOCALITY: Raven Ranch, Kerr Co., Texas. 



OTHER LOCALITIES: Garcia, near Monterrey, Nuevo Leon, Mexico 

 (Chamberlin 1943b). Real, Presidio, and Val Verde Counties, Texas 

 (Hoffman and Orcutt 1960). 



Genus COMANCHELUS Hoffman and Orcutt I960, p. 128. 



TYPE SPECIES: Toltecolus chihuanus Chamberlin, by original desig- 

 nation. 

 Comanchelus chihuanus (Chamberlin). 



Toltecolus chihuanus Chamberlin 1947a, p. 10; Hoffman and Orcutt 

 1960, p. 128. 



TYPE: Collection of R. V. Chamberlin. 



TYPE LOCALITY: Chihuahua City, Chihuahua, Mexico. 



Genus CYCLOTHYROPHORUS Pocock 1908, p. 83. 



TYPE SPECIES: Cyclothyrophorus salvini Pocock, by original desig- 

 nation. 



