82 Illinois State Laboratory of Natural History. 



Plate XV. 



Y\(.. 1. Last two segments of antenna of Cyclops ater Herriek. 



Fit;. 2. Fifth foot of same. 



Ftg. 3. Receptaculum seminis of same. 



Fur. 4. Cyclops modestus Herriek. 



Plate XVI. 



Fig. 1. Antenna of Cyclops modestus Herriek. 



Fig. 2. Fifth foot of same. 



Fig. 3. Receptaculum seminis of same. 



Plate XVII. 



Plate XX. 



Fig. 1. Fifth foot of Cyclops prasinus Fischer. 

 Fig. 2. Receptaculum seminis of same. 

 Fig. 3. Cyclops phaleratus Koch. 



