PLATE IV. 



Cyclops ingen». 



1. First segment of abdomen of female, f). Stylets ol mature female. 



2. Antenna. (i. " young mule. 



3. Fifth foot. 7. Maxilliped. 



4. Antenna of young male. 8. Mandible. 



9. Cyclops crassicornis, Female. 



10. Antenna. 13. Second antenna. 



11. Tennin;U portion of abdomen. 14. Nauplius form. 



12. Female fifth foot. 



