78 TT. S. NATIONAL MUSEUM BULLETIN 212 



Type: Hamburg Museum. 



Type Locality : Hamburg, Germany. 



Range: Northern Germany; Sweden; introduced into Newfoundland. 



Suborder STRONGYLOSOMIDEA Brolemann 



Strongylosomidi Brolemann, 1916, Ann. Soc. Ent, France, vol. 84, p. 526. 

 Strongylosomidea Attems, 1937, Das Tierreich, Lief. 68, p. 23. 



KEY TO NORTH AMERICAN FAMILIES OF STRONGYLOSOMIDEA 



I. Gonopods of male very simple, the acropodite not definitely set off from a prefemur, 

 and never sheathed; gonopod aperture large . . . Eurymerodesmidae (p, 78) 

 Gonopods of male commonly more or less complicated, with the acropodite definitely 

 set off from a prefemur, and with a separate solenomerite 



STRONGYLOSOMroAE (p. 83) 



Family EURYMERODESMIDAE Causey 

 Eurymerodesmidae Causey, 1951, Proc. Arkansas Acad. Sci., vol. 4, p. 69. 

 Genus EURYMERODESMUS Brolemann 



Eurymerodesmus Brolemann, 1900, Mem. Soc. Zool. France, vol. 13, p. 101. 



Generotype : Polydesmus hispidipes Wood, by monotypy. 



Range: Eastern United States, from Illinois and Iowa south to Texas and 

 Oklahoma, east to Florida. 



Species: Twenty-one, many of which appear to be but geographic races of 

 a polytypic species. 



Eurymerodesmus amplus Causey 



Eurymerodesmus amplus Causey, 1952, Chicago Acad. Sci. Nat. Hist. Misc. 



No. 106, p. 4, fig. 3. 

 Type : Amer. Mus. Nat. Hist. 

 Type Locality: Ruston, Lincoln Parish, Louisiana. 

 Range : Known only from type locality. 



Eurymerodesmus angularis Causey 



Eurymerodesmus angularis Causey, 1951, Proc. Arkansas Acad. Sci., vol. 



4, p. 69, figs. 1-3. 

 Type: Acad. Nat. Sci. Philadelphia. 

 Type Locality : Prairie County, Arkansas. 

 Range : Known only from type locality. 



Eurymerodesmus bentonus Causey 



Eurymerodesmus bentonus Causey, 1950, Ohio Journ. Sci., vol. 50, p. 



268, fig. 5. 

 Type: Acad. Nat. Sci. Philadelphia. 

 Type Locality: Monte Ne, Benton County, Arkansas. 

 Range : Known only from type locality. 



