PLATE G. 



Fig. 1. Alonopsis Intlsshna, male. 



Fig. 2. Alona rjlacialis ? female. 



Fig. '^. do., male. 



Fig. 4. Alona tuherculata. 



Fig. 5. do., post-abdomen. 



Fig. 6. do., labrum. 



Fig. 7. do , antenna, setose branch. 



Fig. 8. Alona glacialis, antenna. 



Fig. 9. Alonopsis latissima, feet. 



Figs.lO, 11. Alonella excisa, details of shell sculpture. 



Fig. 12. Pleuroxus denticulatus, female; 10a. outline of ephippium. 



Fig. 13. do., common variety. 



Fig. 14. Alona tuherculata. var. 



