MILLIPEDS OF NORTH AMERICA 107 



Family UNDERWOODIIDAE VerhoefE 



Underwoodiidae Verhoeff, 1909, Zool. Anz., vol. 34, p. 568. 



Genus UNDERWOODIA Cook and Collins 



Underwoodia Cook and Collins, 1895, Ann. New York Acad. Sci., vol. 9, 



p. 79. 

 Generotype: Underwoodia polygama Cook and Collins, by present desig- 

 nation. 



Range : Northeastern North America ; Utah. 

 Species: Four. 



Underwoodia hespera Chamberlin 



Underivoodia hespera Chamberlin, 1925, Pan-Pacific Ent., vol. 2, No. 2, 



p. 63. 

 Type : Collection of R. V. Chamberlin. 



Type Locality: Mill Creek Canyon, Salt Lake County, Utah. 

 Range : Canyons of the Wasatch Mountains, Utah. 



Underwoodia iuloides (Harger) 



Trichopetalum iuloides Harger, 1872, Amer. Journ. Sci. Arts, voL 4, p. 118. 

 Underwoodia iuloides Cook and Collins, 1895, Ann. New York Acad. Sci., 



vol. 9, p. 83, figs. 177-179. 

 Type : Present location unknown. 

 Type Locality: Simmon's Harbor, Ontario. 

 Range : Recorded from Ontario, Michigan, and central New York. 



Underwoodia polygama Cook and Collins 



Underwoodia polygama Cook and Collins, 1895, Ann. New York Acad. Sci. 



vol. 9, p. 80, figs. 180-190.— Pahnen, 1952, Ann. Zool. Soc. 'Vanamo', 



vol. 15, No. 1, p. 2, figs. 1-9. 

 Type:U. S.Nat. Mus. 



Type Locality: Centerport (Long Island), Suffolk County, New York. 

 Range: Recorded only from Long Island and from Newfoundland. 



Underwoodia tida Chamberlin 



Underwoodia tida Chamberlin, 1925, Pan-Pacific Ent., vol. 2, No. 2, p. 62. 



Type: Collection of R. V. Chamberlin. 



Type Locality: Logan Canyon, Cache County, Utah. 



Range: Known only from type locality. 



Family UROCHORDEUMIDAE Silvestri 



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

 p. 230. 



