MILLIPEDS OF NORTH AMERICA 163 



Chicobolus jucundus Causey 



Chicobolus jucundus Causey, 1955, Journ. Kansas Ent. Soc, vol. 28, 



p. 77. 

 Type: Amer. Mus. Nat. Hist. 



Type Locality: Pensacola, Escambia County, Florida. 

 Range: Known only from type locality. 



Chicobolus pilsbryi Chamberlin 



Chicobolus pilsbryi Chamberlin, 1947, Proc. Acad. Nat. Sci. Philadelphia, 



vol. 99, p. 46, figs. 46, 47. 

 Type: Acad. Nat. Sci. Philadelphia (No. 9968). 

 Type Locality : Boca Chica Key, Dade Coxmty, Florida. 

 Range: Known only from type locality. 



Chicobolus spinigerus (Wood) 



Spirobolus spinigerus Wood, 1864, Proc. Acad. Nat. Sci. Philadelphia, 



p. 15. 

 Spirobolus paludis Chamberlin, 1918, Ann. Ent. Soc. Amer., vol. 11, 



p. 374 (tvpe locality: Okefenokee Swamp, Georgia; type: Mus. Comp. 



ZooL). 

 Chicobolus spinigerus Causey, 1955, Journ. Kansas Ent. Soc, vol. 28, 



p. 76, fig. lb. 

 Type: Acad. Nat. Sci. Philadelphia. 



Type Locality: "Florida and South Carolina" (Wood), restricted by 

 Causey to Everglades National Park, Florida. 



Range: Peninsular Florida, south to Charleston, South Carolina, north- 

 west as far as Leon Coimty, Florida. 



GenMts HILTONIUS ChamberUn 



Hiltonius Chamberlin, 1918, Proc. Biol. Soc. Washington, vol. 31, p. 



166; 1949, Journ. Washington Acad. Sci., vol. 39, p. 166. 

 Generotype : Hiltonius pulchrus Chamberlin, by original designation. 

 Range: Southern California and Arizona, south on the Mexican Plateau 

 as far as the State of Guerrero. 



Species: Fifteen, of which eight are found within our limits. 



Hiltonius congregans Chamberlin 



Hiltonius congregans Chamberlin, 1941, Bull. Univ. Utah, biol. ser., vol. 6, 



No. 4, p. 9, fig. 10. 

 Type: Collection of R. V. Chamberlin. 



Type Locality: Mountain Spring, San Diego County, California. 

 Range: Known only from type locality. 



