eee 
See oe 
© 
10. 
14. 
15. 
15a. 
Side view. 
First foot. 
Chydorus globosus. 
End of post-abdomen. 
Chydorus sphericus. Post-abdomen of male. 
66 
nitidus. Post-abdomen of female. 
nitidus. Head. 
sphericus. Ephippial female. 
sphericus. Female. 
globosus. Post-abdomen of male. 
sphericus. From above. 
ovalis. 
celatus. 
Dunhevidia setiger. 
Alona affinis. 
Pleuroxus gracilis. 
be 
gracilis. Antenna. 
