PLATE LIII. 



Figs. 1—11. Copilia mirabilis, Dana. 

 Fig. 1. Female {]), seen from above. 



Fig. 2. The same, seen from right side; both magnified 40 diameters. 

 Fig. 3. Anterior antenna. 



Figs. 4, 5. Posterior antenna of male and female (?) 

 Fig. 6. Mandible. 

 Fig. 7. Maxilla (?). 

 Fig. 8. Anterior foot-jaw. 

 Fig. 9. Posterior foot-jaw. 

 Fig. 10. Foot of first pair. 

 Fig. 11. Foot of fourth pair. 



Figs. 12-16. Lubbockia squittimancb, Claus. 

 Fig. 12. Anterior antenna of female. 

 Fig. 13. Posterior antenna. 

 Fig. 14. Posterior foot-jaw of female. 

 Fig. 15. One of the swimming feet. 

 Fig. 1G. Foot of fifth pair. 



