8 U. S. NATIONAL MUSEUM BULLETIN 212 



Superorder Helminthomorpha 

 Order Polydesmida 



Suborder Polydesmidea 



Suborder Strongylosomidea 

 Order Chordeuinida 



Suborder Chordeumidea 



Suborder Lysiopetalidea 



Suborder Striariidea 

 Order Stemmiulida 

 Order Julida 



Suborder Jiilidea 



Suborder Paraiulidea 

 Order Spirobolida 

 Order Spirostreptida 

 Order Cambalida 

 Superorder Colobognatha 

 Order Polyzoniida 

 Order Platydesmida 



