66 U. S. NATIONAL MUSEITM BULLETIN 212 



Dixidesmus catskillus Chamberlin 



Dixidesmus catskillus Chamberlin, 1947, Proc. Acad. Nat. Sci. Philadel- 

 phia, vol. 99, p. 24, fig. 2. 

 Type: Acad. Nat. Sci. Philadelphia (No. 9943). 

 Type Locality: Catskill, Greene County, New York. 

 Range: Known only from type locality. 



Dixidesmus christianus Chamberlin 



Dixidesmus christianus Chamberlin, 1946, Proc. Biol. Soc. Washington, 



vol. 59, p. 142, fig. 4. 

 Type: Collection of R. V. Chamberlin. 



Type Locality: Pass Christian, Harrison County, Mississippi. 

 Range: Known only from type locality. 



Dixidesmus echinogon (Chamberlin) 



Polydesmus echinogon Chamberlin, 1942, Bull. Univ. Utah, biol. ser., vol. 



6, No. 8, p. 10, fig. 33. 

 Dixidesmus echinogon Chamberlin, 1943, Bull. Univ. Utah, biol. ser., vol. 



8, No. 2, p. 18. 

 Type: Collection of R. V. Chamberlin. 



Type Locality: Shawanese (Harvey's Lake), Luzerne County, Pennsyl- 

 vania. 



Range: Thus far recorded only from type locality and Elmira, Chemung 

 County, New York. 



Dixidesmus erasus (Loomis) 



Polydesmus erasus Loomis, 1943, Bull. Mus. Comp. Zool., vol. 92, No. 7, 



p. 406, fig. 17, and pi. 5, fig. 4. 

 Dixidesmus humilidens Chamberlin, 1943, Bull. Univ. Utah, biol. ser., vol. 



8, No. 2, p. 20, fig. 36 (type locality: Gainesville, Hall County, 



Georgia; type: collection of R. V. Chamberlin). 

 Dixidesmus erasus Causey, 1952, Chicago Acad. Sci. Nat. Hist. Misc. No. 



106, p. 7. 

 Type: Mus. Comp. Zool. 



Type Locality: Huntsville, Madison County, Alabama. 

 Range: Northern Georgia and Alabama, north through Tennessee and 

 Kentucky to Pope County, Illinois. 



Dixidesmus gausodicrorhachus Johnson 



Dixidesmus gausodicrorhachus Johnson, 1954, Chicago Acad. Sci. Nat. 



Hist. Misc. No. 137, p. 1, fig. la-d. 

 Type: U. S. Nat. Mus. (No. 2117). 



Type Locality: West side of Garnet Lake, Mackinaw County, Michigan. 

 Range : Recorded from 19 Counties in northern Michigan. 



