108 tJ. S. NATIONAL MUSEUM BULLETIN 212 



Genus UROCHORDEUMA Silvestri 



Urochordeuma Silvestri, 1909, Atti Accad. Lincei, Rendic, vol. 18, p. 230. 

 Generotype : Urochordeuma bumpusi Silvestri, by monotypy. 

 Range: Washington. 

 Species: Two. 



Urochordeuma bumpusi Silvestri 



Urochordeuma bumpusi Silvestri, 1909, Atti Accad. Lincei, Rendic, vol. 18, 



p. 230. 

 Type : Present location unknown. 



Type Locality: Longmire Springs, near Tacoma, Pierce County, 

 Washington. 



Range : Known only from type locality. 



Urochordeuma porona Chamiberlin 



Urochordeuma porona Chamberlin, 1941, Bull. Univ. Utah, biol. ser., 



vol. 6, No. 4, p. 23, figs. 45, 46. 

 Type: Collection of R. V. Chamberlin. 



Type Locality: Snoqualmie Pass, King County, Washington. 

 Range : Known only from type locality. 



Suborder LYSIOPETALIDEA 



Lysiopetalidae Wood, 1865, Trans. Amer. Philos. Soc, new ser., vol. 13, 

 p. 191.— Ryder, 1881, Proc. U. S. Nat. Mus., vol. 3, p. 524. 



Monozonia (in part) Brandt, 1833, Bull. Soc. Nat. Moscou, vol. 6, p. 205. 



Craspedosomidae (in part) Gray, 1842, in Todd, Cyclop. Anat. and 

 Physiol., vol. 3, p. 546. — Saussure and Humbert, 1872, fitudes sur les 

 myriapodes, in Miss. Sci. Mexique, Zool., pt. 6, sect. 2, p. 56. 



Callipodoidae Bollman, 1893, U. S. Nat. Mus. Bull. 46, p. 155. 



Lysiopetaloidea Cook, 1895, Ann. New York Acad. Sci., vol. 9, p. 3. — 

 Attems, 1926, in Kiikenthal-Krumbach, Handbuch der Zoologie, vol. 4, 

 p. 177. 



Family LYSIOPETALIDAE Wood 



Lysiopetalidae Wood, 1865, Trans. Amer. Philos. Soc, vol. 13, p. 191. — 

 Cook, 1895, Ann. New York Acad. Sci., vol. 9, p. 3. — ^Loomis, 1937, 

 Proc U. S. Nat. Mus., vol. 84, No. 3006, p. 97 (monograph of 

 North American species). 



Genus ABACION Rafinesque 6 



Abacion Rafinesque, 1820, Annals of nature, p. 9. — Hoffman and Cra- 

 bill, 1953, Florida Ent., vol. 36, p. 81. 



"The arrangement of species in this genus is based on unpublished work by the 

 junior author. 



