MILLIPEDS OF MEXICO AND CENTRAL AMERICA 73 



Order JULIDA 



KEY TO THE SUBORDERS OF JULIDA. 



\. Telopodite of anterior gonopods mostly absent or rudimentary, when 

 present not moveable by muscles; gonopods sunk in a pocket and 

 more or less concealed; grinding plate of mandibles with a pitted 

 area and adjacent fluted band or file, or if this development is 

 absent, the cutting teeth are also aborted or weak; labroclypeal 



processes absent JULIDEA 



Telopodite of anterior gonopods strongly developed and always 

 moveable by muscles; gonopods not sunk in a pocket, freely ex- 

 posed; grinding plate of mandibles without pits and fluting; labro- 

 clypeal processes present PARAIULIDEA 



Suborder JULIDEA 



Family JULIDAE 



Genus BRACHYIULUS Berlese 1884, p. 1. 



TYPE SPECIES: Julus pusillus Leach, by original designation? 

 Brachyiulus lusitanus Verhoeff, 1898, p. 154, fig. 28. 



TYPE: ZooL Mus. Berlin. 



TYPE LOCALITY: "Herzegowina." 



OTHER LOCALITIES: North America; Tacubaya, D. F.; Patzcuaro, 

 Michoacan, Mexico (Jawlowski 1930). 



Genus DIPLOIULUS Berlese 1884, p. 2. 



TYPE SPECIES: Julus boleti Koch, by original designation? 



For synonymy and bibliography of this European genus and the fol- 

 lowing introduced species see Chamberlin and Hoffman 1958. 

 Diploiulus latistriatus (Curtis 1845), p. 229. 



TYPE: British Mus. 



TYPE LOCALITY: England. 



OTHER LOCALITIES: North America: reported as Cylindroiulus 

 frisius Verhoeff, from Xochimilco, D. F., and Patzcuaro, Michoacan, 

 Mexico (Jawlowski 1930). 



Suborder PARAIULIDEA 



KEY TO THE FAMILIES OF PARAIULIDEA 



1. Mandible with 4 pectinate lamellae; gnathochi larium of similar form 

 in both sexes; neither the second nor the seventh pair of male 

 legs modified; first legs of male with 1 to 6 joints. 



NEMASOMATIDAE 



