58 U.S. NATIONAL MUSEUM BULLETIN 266 



Acentronus Chamberlin 1943b, p. 50. New synonymy, suggested by 

 R. L. Hoffman. 



TYPE SPECIES: Polydesmus Umax Saussure, by original desig- 

 nation. 

 Rhysodesmus acolhuus (Humbert and Saussure). 



Polydesmus acolhuus Humbert and Saussure 1869, p. 150. 



Polydesmus (Fontaria) acolhuus Saussure and Humbert 1872, p. 33; 

 Pocock 1910, p. 203. 



TYPE: Mus. Hist. Nat. Geneve (H). 



TYPE AND PARATYPE LOCALITY: VaHey of Moyapan and the 

 Sierra de Agua, near Orizaba, Eastern Cordillera, Mexico. 

 Rhysodesmus acuarius Attems 1931, p. 63. 



TYPE: Natur. Mus. Wien. (H) 



TYPE LOCALITY: Orizaba, Veracruz, Mexico. 

 Rhysodesmus alpuyecus Chamberlin 1943b, p. 37. 



TYPE: Collection of R. V. Chamberiin. 



TYPE AND PARATYPE LOCALITY: Alpuyeca, Morelos, Mexico. 

 Rhysodesmus amplinus Chamberlin 1952a, p. 571. 



TYPE: Chicago Mus. Nat. Hist. 



TYPE AND PARATYPE LOCALITY: El Fortm, Veracruz, Mexico. 

 Probably Fortin de las Flores. 

 Rhysodesmus angelus (Karsch). 



Polydesmus (Fontaria) angelus Karsch 1881, p. 39. 



Fontaria tepaneca Attems 1899, p. 259; Pocock 1910, p. 203. 



TYPE: Zool. Mus. Berlin (H). 



TYPE AND PARATYPE LOCALITY: Puebla, Mexico. 

 Rhysodesmus arcuatus Pocock 1910, p. 201. 



TYPE: British Mus. 



TYPE LOCALITY: Omilteme, Guerrero, Mexico. 

 Rhysodesmus attemsi Pocock 1909, p. 200. 



TYPE: Brirish Mus. 



TYPE LOCALITY: Amula, Guerrero, Mexico. 



PARATYPE LOCALITY: Omilteme, Guerrero, Mexico. 

 Rhysodesmus bolivari Chamberlin 1943b, p. 38. 



TYPE: Collection of R. V. Chamberlin. 



TYPE AND PARATYPE LOCALITY: Garci'a, Nuevo Le<^n, Mexico. 

 Rhysodesmus bonus Chamberlin 1943b, p. 38. 



TYPE Collection of R. V. Chamberlin. 



TYPE LOCALITY: Fort'n, Veracruz, Mexico. Probably Fortm de 

 las Flores. 



PARATYPE LOCALITY: Orizaba, Mexico. 

 Rhysodesmus brachus Chamberlin 1941c, p. 63. 



TYPE: Collecrion of R. V. Chamberlin. 



TYPE AND PARATYPE LOCALITY: Ojo de Agua, Sabinas Hidalgo, 

 Nuevo Leon, Mexico. 



