Fig, 



1. Ceriodaphnia scitiila (small variety). Ephippial female. 



2. Bosniiiia longirostris. 



3. " lilljeborgii. After P. E. Mueller. 



4. " Hook on the first foot of male. 



5. Scapoleberis nmcronata. 

 G. " comuta. Head. 



7. " aiigulata. Head. 



7a. " angulata. Angle of shell. 



8. Pleuroxiis tlenticulatus. Male. 



9. Simocephalus americaiius. Head of female. 



10. Eosmiua. Post- abdomen of male (after Weismann). 



