MILLIPEDS OF NORTH AMERICA 187 



Type: U. S. Nat. Mus. (No. 977) . 



Type Locality : Seneca, Plumas County, California. 



Range : Known only from type locality. 



Genus EUZONIUM Chamberlin 



Euzonium Chamberlin, 1950, Chicago Acad. Sci. Nat. Hist. Misc. No. 68, 



Generotype : Euzonium crucis Chamberlin, by original designation. 

 Range: California. 

 Species: One. 



Euzonium crucis Chamberlin 



Euzonium crucis Chamberlin, 1950, Chicago Acad. Sci. Nat. Hist. Misc. 



No. 68, p. 1. 

 Type : Collection of R. V. Chamberlin. 

 Type Locality : Felbon, Santa Cruz County, California. 

 Range : Known only from type locality. 



Genus HYPOZONIUM Cook 



Hypozonium Cook, 1904, in Harriman Alaska Exped., vol. 8, p. 62. 

 Generotype: Hypozonium anurum Cook, by original designation. 

 Range: Washington. 

 Species: One. 



Hypozonium anurum Cook 



Hypozonium anurum Cook, 1904, in Harriman Alaska Exped., vol. 8, p. 63, 

 pi. 5, figs, la-d.— Cook and Loomis, 1928, Proc. U. S. Nat. Mus., 

 vol. 72, art. 18, p. 17. 



Type: U. S. Nat. Mus. (No. 791). 



Type Locality: Seattle, Washington. 



Range : Known only from Seattle and Bremerton, Washington. 



Genus PIZONIUM Chamberlin 



Pizonium Chamberlin, 1950, Chicago Acad. Sci. Nat. Hist. Misc. No. 68, 



p. 2. 

 Generotype: Pizonium crescentis Chamberlin, by original designation. 

 Range: California. 

 Species: One. 



Pizonium crescentis Chamberlin 



Pizonium crescentis Chamberlin, 1950, Chicago Acad. Sci. Nat. Hist. Misc. 



No. 68, p. 2. 

 Type: Collection of R. V. Chamberlin. 



Type Locality : 15 miles east of Crescent, Los Angeles County, California. 

 Range : Known from type locality only. 



