SCHEME OF THE CLASSIFICATION ADOPTED 

 IN THIS VOLUME 



The names of extinct groups are printed in ita/ii-,<. 

 CRUSTACEA (p. 3). 



hivisioiis. 



Orders. 



ENTOMOSTRACA (p. 18). 

 Sub-Orders. Tribes. 



ilies. 



(Continued on the next p<i<j> . 



XI 



