MILLIPEDS OF NORTH AMERICA 11 



Polyxenus pugetensis Kincaid 



Polyxenus pugetensis Kincaid, 1898, Ent. News, vol. 9, p. 192. 



Type: Location unknown. 



Type Locality : Western Washington. 



Range: Washington and British Columbia. 



Polyxenus tuberculatus Pierce 



Polyxenus tuberculatus Pierce, 1940, Bull. Southern California Acad. Sci., 



vol. 39, No. 2, p. 166. 

 Type : Los Angeles Museum. 

 Type Locality : Sabinal, Uvalde County, Texas. 

 Range : JCnown only from type locality. 



Subclass CHILOGNATHA 



Chilognatha Latreille, 1802, Histoire naturelle . . . des crustaces et des 



insectes, vol. 3, p. 44 (in part) . 

 Chilognatha Latzel, 1884, Myr. Ost.-Ung. Monarch., vol. 2, p. 354 (as 



suborder) . 



KEY TO SUPERORDERS OF CHILOGNATHA 



1. Gonopods of male at caudal end of body, modified from last two pairs of legs; legs 



of 7th segment not modified; tracheae dichotomously branched. 



Pentazonia (p. 11) 



Gonopods of male modified from legs of the 7th segment; tracheae not branched as 



above 2 



2. First legs of 7th segment of male not modified; eight pairs of legs in front of the 



gonopods; head smsdl, mandibles usually much reduced; labrum without teeth. 



COLOBOGNATHA (p. 181) 



First legs of 7th segment of male always modified into gonopods; seven pairs of legs 

 in front of gonopods; head not reduced, mouthparts of normal size; labrum 

 usually with three teeth Helminthomorpha (p. 13) 



Superorder PENTAZONIA 



Pentazonia Brandt, 1833, Bull. Soc. Nat, Moscou, vol. 6, p. 194.— Attems, 



1914, Arch. Naturg., Abt. A., vol. 80, p. 135.— Brolemann, 1935, Myr. 



Diplop., Chilognathes I, in Faune de France, No. 29, p. 88. 

 Oniscomorpha Pocock, 1887, Ann. Mag. Nat. Hist., ser. 5, vol. 20, p. 291. — 



BoUman, 1893, U. S. Nat. Mus. Bull. 46, p. 161.— Cook, 1895, Ann. 



New York Acad. Sci., vol. 9, p. 2.— Attems, 1899, Denkschr. Akad. 



Wiss., Wien, vol. 67, p. 226. 

 Opisthandria Verhoeff, 1894, Verb. Zool.-Bot. Ges. Wien, vol. 44, p. 17.— 



Attems, 1926, in Kiikenthal-Krumbach, Handbuch der Zoologie, vol. 



4, p. 114. 



