Alonella pulchella. 



Fig. 



1. Female. 



2. EeticulatioDS. 



3. Post-abdomen. 



4. Alona modesta. Male. 



Diaptonius siiuilis. 



5. Female 

 5a. Jaw. 



6. Fifth foot of the male. 



7. Fifth foot of the female. 



Diaptonius luinnetonka. 



8. Fifth foot of the male. 



9. Fifth foot of the female. 



10. Abdomen of the female. 



11. Diaptonius stagnalis. Margin of the last thoracic segment. 



12. " sanguineus. Margin of the last thoracic segment. 



13. " stagnalis. Fifth foot of the male. 



14. Epischura fluviatilis. Abdomen of the male. 



15. " lacustris. Fifth feet of the male. 



16. " fluYiatilis. Fifth feet of the male. 



17. Biaptomus pallitlus. Inner ramus of the fifth feet of the male. 



18. ' ' sicilis. Inner ramus of the fifth feet of the male. 



