Fresh-water Entomostraca of South America. 



thod, and will, I hope, serve for easily recognising the 

 species here treated of. All the habitus-figures, and also 

 some of the detail -figures, are drawn from fresh and still 

 living specimens, whereby the inconvenient deformations 

 of the body caused by the action of the preserving fluids 

 are avoided. 



