Fig. 



14. Daphiiia pulex var. iiasutus. 

 5. " similis. Oatliue of head and (a) beak. 



0. Leptotlora li.valiiia. Seen from above. 



7. " liyalina. Larva. 



8. Latoiia setitVra. Female. 



9. Limiiosida froutosa. Female. 



10. " froutosa. Antenunle of male. 



11. Holoppdiuni gibbenim. Female. 



12. Sitla elon^ata. Head outline. 



13. " crysfallina. Head outline of young female. 



14. " cr.vstalliiia. Antennule of male. 



15. " crystallsiia. Antennule of female. 



16. (Dapliuia byalina) "D. galeata." Outline of head. 



17. " " "D. vitrea." Outline of head. 



