PLATE XX. 



Fig*- 1—13. Euchceta hessei, n. sp. 



Fig. 1. Male, seen from leftside, magnified 40 diameters. 



Fi°\ 2. Anterior antenna of female. 



Fiff. 3. Posterior antenna. 



Fig. 4. Mandible. 



Fio-. 5. Maxilla of female. 



Fi". 6. Maxilla of male. 



Fig. 7. Anterior foot-jaw of female. 



Fig. 8. Posterior foot-jaw of female. 



Fig. 9. Posterior foot-jaw of male. 



Fig. 10. Terminal spines of one of the swimming feet. 



Fig. 11. Fifth pair of feet of male. 



Fig. 12. Abdomen of male. 



Fig. 13. Abdomen of female. 



Figs. 14-19. Euchceta pulchra (Lubbock). 



Fio-. 14. Maxilla of female. 



Fig. 1 5. Posterior foot-jaw of male. 



Fig. 16. Posterior foot-jaw of female 



Fig. 17. Fifth pair of feet of male. 



Fig. 18. Terminal spine of one of the swimming feet. 



Fig. 19. Abdomen of male 



