in aie ee Sraee ak D 
Streblocerus serricaudatus. Female. 
Macrothrix borysthenica. Antennule. 
Pleuroxus griseus. Female and post-abdomen. 
Ceriodaphnia cornuta. Head. 
Post-abdomen of same species. 
Daphnia lumholtzii. Female. 
Leydigia australis. Post-abdomen. 
