532 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



Type data. — The author has been unable to locate Palisot de 

 Beauvois' type which was from "Etats-Unis d'Amerique." Amyot 

 and Serville's type of castaneus, also unlocated, was from "Amerique 

 Septentrionale." 



Specimens studied: 96 males, 119 females. 



United States: Alabama: Mobile; June. Delaware: Newark; July. Florida: 

 Branford, Clearwater, Dunnellon, Fort Lauderdale, Fort Myers, Fruitville, 

 Gainesville, Indian River, Jackson, La Belle, Lacoochee, Lake City, Lakeland, 

 Lake Placid, Lutz, Maeclenny, Miami, Putnam Co., St. Petersburg, Sanford, 

 Suwannee Springs, Tallahassee; April to November. Georgia: Bainbridge, 

 Hunter Field, Okefenokee Swamp, Thomasville, Waycross; June to September. 

 Illinois: Cairo, Harrisburg; June to September. Kansas: Ellsworth; September. 

 Louisiana: Harahan; July. Mississippi: Gulfport, Lucedale; June, November. 

 Missouri: Charleston, Kansas City, St. Louis; June to August. New Jersey: Mana- 

 hawkin; August. North Carolina: Southern Pines; July. Oklahoma: Elmer, 

 Payne Co.; July, August. South Carolina: Allendale, Charleston, Florence, Fort 

 Royal; July. Texas: Brazos Co., Burkburnett, Colorado City, Columbus, El 

 Paso, Hidalgo Co., Sherman, Sequin; May to August. Virginia: Virginia Beach; 

 August. 



DiscussiGiM. — This species has long gone under the name mirabilis 

 Perty (the earlier usage of the spelling mutabilis appears to be due to 

 an error on the caption of the plate accompanying the original descrip- 

 tion). However, the larger size (8.9 mm.) and the type locality 

 "Provincia Piauhiensis," Brazil, indicate that this name has been 

 improperly applied by most authors and actually belongs to a larger 

 South American species of the genus. The earliest published name 

 assignable to this genus, ciliata Palisot Beauvois, appears to be the 

 correct one for the present species. The type locality, "Etats-Unis 

 d'Amerique," and the illustration of a stout, compact body 7 mm. 

 long agree well with the species at hand and could belong to no other 

 form except possibly crassus Walker. C. crassus, however, occurs 

 only in the southwestern part of the continent, an area that did not 

 belong to the United States in the early 1800's. The synonymy also 

 includes the Cyrtomenus castaneus of Amyot and Serville, a name which 

 also probably belongs to this species as has been indicated by Uhler 

 (1877) and others. 



The relationship between Cyrtomenus ciliatus, crassus and mirabilis 

 (in the sense of the present paper) is not yet fully evident. That 

 there is close morphological relationship between them is observable. 

 Also, their respective ranges are separate, yet adjacent and form a 

 north-south sequence from central North America to southern South 

 America. Such evidence suggests that perhaps these forms do not 

 represent three distinct species, but subspecies of one widely ranging 

 form. If the discontinuities disappear with the examination of addi- 

 tional material from the critical regions, a clinal development of but 

 one form would result, and that form would have to take the name 



