MILLIPEDS OF NORTH AMERICA 105 



Type: Probably lost. 

 Type Locality: "Oregon." 



This poorly described form presents an extremely difficult problem, and 

 the name may never be placed except by some empirical action. 



Trichopetalum glomeralum Harger 



Trichopetalum glomeratum Harger, 1872, Amer. Journ. Sci. Arts, vol. 4, 

 p. 118. 



Type: Present location unknown. 



Type Locality: John Day Valley, Oregon. 



Possibly a species of Conotyla, but, as observed by Cook and Collins, "The 

 original description of this species is so brief that the generic position must 

 remain in doubt." 



Family ERGETHIDAE Chamberlin 



Ergethidae Chamberlin, 1949, Proc. Biol. Soc. Washington, vol. 62, p. 7. 



Genus ERGETHUS Chamberlin 



Ergethus Chamberlin, 1949, Proc. Biol. Soc. Washington, vol. 62, p. 7. 

 Generotype : Ergethus perditus Chamberhn, by original designation. 

 Range: Texas. 

 Species: One. 



Ergethus perditus Chamberlin 



Ergethus perditus Chamberlin, 1949, Proc. Biol. Soc. Washington, vol. 62, 



p. 7, figs. 1, 2. 

 Type : Collection of R. V. Chamberlin. 

 Type Locality: Near Kerrville, Kerr County, Texas. 

 Range: Known only from type locality. 



Family RHISCOSOMIDIDAE Silvestri 



Rhiscosomididae Silvestri, 1909, Atti Accad. Lincei, Rendic, vol. 18, 

 p. 232. 



Genus RHISCOSOMIDES Silvestri 



Rhiscosomides Silvestri, 1909, Atti Acad. Lincei, Rendic, vol. 18, p. 232. 

 Generotype : Rhiscosomides meineri Silvestri, by monotypy. 

 Range: Oregon. 

 Species: Two. 



Rhiscosomides josephi Chamberlin 



Rhiscosomides josephi Chamberlin, 1941, Bull. Univ. Utah, bid. ser., vol. 



6, No. 5, p. 16. 

 Type : Collection of R. V. Chamberlin. 



