248 explanatiojts of plates. 



Daphnlv Kahlbeegensis. . 



18-21. Outlines ilhistratiiig various stages of g^o^vtll (Lough Erne 

 Ireland) x 27. 



Daphnia galeata, var. obtusifeoxs, 

 22. Head of female. 



Plate X. 



DaCTYLUEA BLVGSxV. 



Fig. 1. Female seen from right side X 16. 



2. Male seen from right side x 27, ^ 



3. Antennule of female X 140. 



4. Caudal lamina of female X 27. 



5. Antennnle of male X 56. 



(a) apical filament of same X 140. 



6. Caudal lamina of male x 56. 



7. Antennule of immature male X 56, 



8. Caudal lamina „ X 84, 



18, Foot of first pair of male X 56. 



Daphxia loxgispesta, var, aquilusta. 



9. Head seen from left side x 27. 



10. Caudal lamina X 56. 



Var. NASUTA. 



11. Female seen from right side X 27. 



Hyalodaphxia Jaedixii. 



12. Female seen from right side X 33. 



13. Caudal lamina X 135. 



Daphxlv. hyalixa, var. pelucida. 



14. Female seen from left side X 27. 



15. Caudal himina x 56. 



Daphxia Kahlbeegexsis. 



16. Female seen from left side X 27. 



17. Caudal lamina x 56. 



Daphxia lacusteis. 



19, Female seen from right side x 33. 



20, Caudal lamina X 56. 



