PLATE XXXI. 



Fig. 1. Acartia denticornis, n. sp. 

 Fig. 1. Female, seen from above, magnified 80 diameters. 



Figs. 2-9. Candace pachydactyla, Dana. 



Fig. 2. Anterior antenna of female. 



Fig. 3. Anterior antenna of male. 



Fig. 4. Pectinated joints of the same, more highly magnified. 



Fig. 5. Outer branch of one of the swimming feet. 



Fig. 6. Fifth pair of feet of male. 



Fig. 7. The same, from an immature specimen. 



Fig. 8. Fifth pair of feet of female. 



Fig. 9. Abdomen of male. 



Figs. 10-12. Corynura barbata, n. gen. and sp. 

 Fig. 10. Anterior antenna of female. 

 Fig. 11. Fifth pair of feet. 

 Fig. 12. One of the caudal stylets (with last abdominal rings). 



Figs. 13, 14. Pleuromma abdomincde (Lubbock). 



Fig. 13. Base of anterior antenna of female. 

 Fig. 14. Posterior antenna. 



