PLATE XIX. 



Cyclops strenuus. 



Fig. 1. Anterior antenna of female. 



2. Mandible and palp. 



3. Labrum. 



4. Anterior foot-jaw. 



5. Foot of fourth pair. 



6. Foot of fifth pair. 



7. Abdomen and tail. 



Cyclops aquoreus. 



8. Female seen from above. 



9. Anterior antenna of male. 

 10. Maxilla. 



