MILLIPEDS OF MEXICO AND CENTRAL AMERICA 97 



Gymnostreptus laetus Chamberlin 1922, p. 13. 



TYPE: U.S. Nat. Mus., no. 823. 



TYPE AND PARATYPE LOCALITY: Joyabaj, Guatemala. 

 Gymnostreptus vagans Chamberlin 1922, p. 13. Return to original 

 combination. 



Epistreptus (Microtrulius) vagans Attems 1950, p. 220. 



Gymnostreptus pacificus Chamberlin 1922, p. 14; Attems 1950, p. 220. 



Epistreptus (Microtrulius) pad ficus Attems 1950, p. 220. 



TYPE: U.S. Nat. Mus., no. 824. 



TYPE LOCALITY: Candalaria Rocks, Scamay Estuary, Guatemala. 



PARATYPE LOCALITY: Trece Aguas, Guatemala. 



OTHER LOCALITIES: Santo Domingo de San Mateo, Costa Rica 

 (Chamberlin 1922 for G. pacificus); various localities in nine departments 

 of El Salvador (Kraus 1954b). 



On the basis of the structure of the gonopods it seems necessary to 

 return this species to its original designation. 



Genus ISOPOROSTREPTUS Silvestri 1898b, p. 73. 



Epistreptus Carl 1914, p. 865 (not Silvestri). 

 Pemptoporus Attems 1914a, p. 121; Hoffman 1953a, p. 150. 

 Scaphiostreptus Attems 1950, pp. 230, 236, in part (not Brolemann); 



Hoffman 1953a, p. 150. 

 TYPE SPECIES: Isopowstreptus villicola Silvestri, by monotypy. ^ 

 Isoporostreptus pittieri Hoffman 1953a, p. 151. 

 TYPE: U.S. Nat. Mus., no. 2018. 

 TYPE LOCALITY: Los Siguas, Chiriqui Prov., Panama. 



Genus ORTHOPORUS Silvestri 1897a, p. 7. 



Diaporus Silvestri 1897a, p. 8; Pocock 1909, p. 93. 



Scaphiostreptus Brolemann 1901, p. 150; Pocock 1909, p. 93. 



TYPE SPECIES: Orthoporus diaporoides Silvestri, by monotypy. 

 Orthoporus absconsus Chamberlin 1922, p. 15. Return to original designa- 

 tion. 



Scaphiostreptus absconsus Attems 1950, p. 231. 



TYPE: U.S. Nat. Mus., no. 826. 



TYPE LOCALITY: Santo Domingo de San Mateo, Pacific side, Costa 

 Rica. 



OTHER LOCALITIES: San Jose', Costa Rica(Chamberlin 1933); seven 

 departments. El Salvador (Kraus 1954b); Zamorano, Tegucigalpa, 

 Honduras (Loomis 1959b). 

 Orthoporus acanthethus Chamberlin 1947b, p. 57. 



TYPE: Acad. Nat. Sci. Philadelphia, no. 9980. 



TYPE LOCALITY: Piedras Negras, Guatemala. 



