Fig. 



1. Cyclops signatiis var. teiiuicornis. Caudal stylet. A case 



where the inner aspect is ciliate! 



2. Fourth foot of same. 



Caiithocaniptus uorthiiinbricus var. americanus. 



8. Caudal stylet. 



4. Maxilliped. 



5. Fifth foot. 



Diaptomus hircus. 



6. Left fifth foot of male. 



7. Right fifth foot of male. 



8. Fifth foot of female. 



Diaptonins sancti-patricii. 



9. Fifth foot of male. 



10. Fifth foot of female. 



11. Ai^pendages of penultimate joint of right male antenna. 



Figs, (ill are after Brady. 



