138 U. S. NATIONAL MUSEUM BULLETIN 212 



Genus COSIULUS Chamberlin 



Gosiulus Chamberlin, 1940, Bull. Univ. Utah, biol. ser., vol. 5, No. 7, 



p. 10. 

 Generotype: Gosiulus conformatus Chamberlin, by original designation. 

 Range: Texas. 

 Species: One. 



Gosiulus conformatus Chamberlin 



Gosiulus conformatus Chamberlin, 1940, Bull. Univ. Utah, biol. ser., 



vol. 5, No. 7, p. 10, figs. 32-35. 

 Type: Collection of R. V. Chamberlin. 



Type Locality: South of Three Rivers, Live Oak County, Texas. 

 Range: Reported from Live Oak, Brooks, and McCulloch Counties, in 

 southern Texas, 



Genus LITIULUS Chamberlin 



Litiulus Chamberlin, 1940, Bull. Univ. Utah, biol. ser., vol. 5, No. 7, 



p. 19. 

 Generotype: Paraiulus alaskanus Cook, by original designation. 

 Range: Alaska, British Columbia, northern Washington. 

 Species: One. 



Litiulus alaskanus (Cook) 



Paraiulus alaskanus Cook, 1904, in Harriman Alaska Exped., vol. 8, p. 70, 



pi. 5, figs. 4a-k. 

 Type: U. S. Nat. Mus. (No. 792) . 

 Type Locality: Metlakatla, Alaska. 

 Range: Southern coast of Alaska, south as far as Chinook, Washington. 



Genus MULAIKIULUS ChamberUn 



Mulaikiulus Chamberlin, 1941, Bull. Univ. Utah, biol. ser., vol. 6, No. 5, 



p. 8. 

 Generotype: Mulaikiulus stanleius Chamberlin, by original designation. 

 Range: California. 

 Species: One. 



Mulaikiulus stanleius Chamberlin 



Mulaikiulus stanleius Chamberlin, 1941, Bull. Univ. Utah, biol. ser., vol. 6, 



No. 5, p. 8, figs. 12, 13. 

 Type: Collection of R. V. Chamberlin. 



Type Locality: 12 miles north of Hammond, Tulare County, California. 

 Range: Known only from type locality. 



Genus OKLIULUS Causey 



Okliulus Causey, 1950, Proc. Arkansas Acad. Sci., vol. 3, p. 46. 

 Generotype: Okliulus carpenteri Causey, by original designation. 



