MILLIPEDS OF NORTH AMERICA 157 



Type Locauty : Cold Spring Canyon, Santa Inez Mountains, California. 

 Range: Known only from type locality. 



Genus ONYCHELUS Cook 



Onychelus Cook, 1904, in Harriman Alaska Exped., vol. 8, p. 67. 

 Gosichelus Chamberlin, 1949, Journ. Washington Acad. Sci., vol. 39, 



p. 168 (generotype, Onychelus jaeger i Chamberlin) . 

 Generotype: Onychelus obustus Cook, by original designation. 

 Range: California and Arizona. 

 Species: Three. 



Onychelus jaegeri Chamberlin 



Onychelus jaegeri Chamberlin, 1947, Proc. Acad. Nat. Sci. Philadelphia, 



vol. 99, p. 50, figs. 53, 54. 

 Gosichelus jaegeri Chamberlin, 1949, Journ. Washington Acad. Sci., vol. 



39, p. 168. 

 Type: Acad. Nat. Sci. Philadelphia (No. 9972). 



Type Locauty : Indio Mudhills, about ten miles northeast of Palm Springs, 

 Riverside County, California. 



Range: Known only from type locality. 



Onychelus medolus Chamberlin 



Onychelus medolus Chamberlin, 1941, Bull. Univ. Utah, biol. ser., vol. 



6, No. 4, p. 13, figs. 17, 18. 

 Type: Collection of R. V. Chamberlin. 

 Type Locality: Olberg, Pinal County, Arizona. 

 Range: Known only from type locality. 



Onychelus obustus Cook 



Onychelus obustus Cook, 1904, in Harriman Alaska Exped., vol. 4, p. 68. 

 Type: U. S. Nat. Mus. (No. 797). 



Type Locality: Colorado Desert, Imperial County, California. 

 Range: Known only from type locality. 



Genus ORTHICHELUS Chamberiin and Hoffman 



Orthichelus Chamberlin and Hoffman, 1950, Chicago Acad. Sci. Nat. Hist. 



Misc. No. 71, p. 7. 

 Generotype : Onychelus phanus Chamberlin, by original designation. 

 Range: California. 

 Species: One. 



Orthichelus michelbacheri (Verhoeff ) 



Onychelus michelbacheri Verhoeff, 1938, Zool Anz., vol. 122, Nos. 11-12, 

 p. 276, figs. 1-3. 



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