70 U.S. NATIONAL MUSEUM BULLETIN 266 



Suborder LYSIOPETALIDEA 

 Family LYSIOPETALiDAE 



Genus ABACION Rafinesque 1820, p. 9. 



Spirostrephon Brandt 1841, p. 105; Hoffman and Crabill 1953, p. 81. 



Platops Newport 1844, p. 267. 



TYPE SPECIES: Abacion tesselatum Rafinesque, by monotypy. 

 Abacion texense (Loomis). 



Spirostrephon texensis Loomis 1937, p. 109; Chamberlin and Hoffman 

 1958, p. 110. 



Spirostrephon jonesi Chamberlin 1942d, p. 17; Chamberlin and Hoffman 

 1958, p. 110. 



TYPE: U.S. Nat. Mus., no. 1237. 



TYPE LOCALITY: Pierce, Wharton Co., Texas. 



PARATYPE LOCALITIES: Wharton, Wharton Co.; Smith, Dallas, and 

 Tarrant Counties, Texas. 



OTHER LOCALITIES: "Great Plains from Ames, Iowa, and Lincoln, 

 Nebraska, through Kansas, Oklahoma and western Missouri, south as 

 far as Kerr, Bandera, and Wharton Counties, Texas, east through Arkan- 

 sas and Louisiana to Rankin Co., Mississippi" (Chamberlin and Hoffman 

 1958). Monterrey and Bustamente, Nuevo Leon, Mexico. (Reported by 

 letter from Dr. Nell B. Causey.) 



Genus COLACTIS Loomis 1937, p. 120. 



TYPE SPECIES: Colactis saxetana Loomis, by original designation. 

 Colactis loomisi Hoffman 1954b, p. 1. 



TYPE: American Mus. Nat. Hist. 



TYPE LOCALITY: Providencia, Durango, Mexico. 

 Colactis prolenta Loomis 1937, p. 126. 



TYPE: U.S. Nat. Mus., no. 1246. 



TYPE AND PARATYPE LOCALITY: On road 15 mi. -north of Ense- 

 nada, Baja California, Mexico. 

 Colactis tiburona (Chamberlin). 



Lysiopetalum tiburonum Chamberlin 1923a, p. 402; Loomis 1937, 

 p. 128. 



TYPE: Mus. California Acad. Sci., no. 1259. 



TYPE LOCALITY: South end of Isla Tiburon, Sonora, Mexico. 



Genus TYNOMA Loomis 1937, p. 117. 



TYPE SPECIES: Tynoma sedecimum Loomis, by original designation. 

 Tynoma messicanum Chamberlin 1943b, p. 33. 

 TYPE: Collection of R. V. Chamberlin. 

 TYPE LOCALITY: Chipinqui, Nuevo Leon, Mexico. 



