88 U. S. NATIONAL MUSEUM BULLETIN 212 



Type Locality: Sequoia National Park, Tulare County, California. 

 Range : Known only from type locality. 



Caseya similis Causey 



Casey a similis Causey, 1952, Proc. Biol. Soc. Washington, vol. 65, p. 113, 



figs. 6, 7. 

 Type: U. S. Nat. Mus. 



Type Locality: Telachapi Pass, Kern County, California. 

 Range : Known only from type locality. 



Genus OPIONA Chamberlin 



Opiona Chamberlin, 1951, Chicago Acad. Sci. Nat. Hist. Misc. No. 87, 



p. 8. 

 Generotype: Opiona columbiana Chamberlin, by original designation. 

 Range: Washington and British Columbia. 

 Species: Two. 



Opiona columbiana Chamberlin 



Opiona columbiana Chamberlin, 1951, Chicago Acad. Sci. Nat. Hist. Misc. 



No. 87, p. 8, figs. 15-19. 

 Type: Provincial Museum, British Columbia. 

 Type Locality: Victoria, British Columbia. 

 Range: Known only from type locality. 



Opiona hatchi Causey 



Opiona hatchi Causey, 1954, Ann, Ent. Soc. America, vol. 47, p. 81, 



figs. 1-3. 

 Type: Amer. Mus. Nat. Hist. 



Type Locality: Carkeek Park, Seattle, King County, Washington. 

 Range: Known only from type locality. 



Genus PLACERNA Chamberlin 



Placerna Chamberlin, 1941, Bull. Univ. Utah, biol. ser., vol. 6, No. 5, p. 10. 

 Generotype: Placerna dorada Chamberlin, by original designation. 

 Range: California. 

 Species: One. 



Placerna dorada Chamberlin 



Placerna dorada Chamberlin, 1941, Bull. Univ. Utah, biol. ser., vol. 6, No. 



5, p. 10, figs. 19-21. 

 Type : Collection of R. V. Chamberlin. 



Type Locality: 9 miles north of Placerville, Eldorado County, California. 

 Range : Known only from type locality. 



