PLATE XXXI. 
Cyclops languidus, G. O. Sars. 
Lal 
S 
. Female x 38. 
. Tail x 106. 
. Anterior antenna x 106. 
. Receptaculum x 106. 
. First foot x 106. 
. Second foot x 106. 
. Fifth foot x 212. 
TO oF Ww be 
Cyclops bicuspidatus, Claus. 
8. Female x 38. 
9. Tail x 83. 
10. Anterior antenna x 106. 
11. Receptaculum x 106. 
12. Fifth foot x 212. 
Cyclops vernalis, Fischer. 
13. Female x 38. 
14. Tail x 87. 
15. Anterior antenna x 106. 
16. Receptaculum x 106. 
17. Fifth foot x 212. 
Cyclops bisetosus, G. O. Sars. 
18. Female x 38. 
19. Tail x 106. 
20. Anterior antenna x 106. 
21. Receptaculum x 212. 
22. Fifth foot x 212. 
