SOUTH AMERICAN NEMATOGNATHI. 



Loricariidte 



Argiiclre 



CallicLtliyidre 



Nematogcnyincc^ |/ HypopMlialmidiT) Aucl.cniptcrino; * 

 Pygidinae t 



StesopMlinfet CctopsiuiiB' 

 Bagriuic ^ 



BunocepLalida: 



Callopliysinrei^ 



TacliisurinsB )k 



Dipl?mystid£B 



Primitive Nematognatlii 



Primitive Ostariophysice 



■^ Siluridse 



• j- PygididJB 



