IMPERFECTLY-KNOWN SPECIES OF OSTRACODA. 449 



Fig. 12. Portion of lining membrane of shell, X 84. 

 Fig. 13. Rostrum and laminar border, X 60. 

 Fig. 14. Shell-gland, x 200. 



PMlome&es sculpta, p. 434. 

 Fig. 15. Shell of male, seen from left side, 



Fig. 16. „ „ above, 



Fig. 17. Rostrum and marginal lamina, X 40. 



Fig. 18. Inner branch of antenna, d , X 110. 



Fig. 19. Post-abdominal lamina, X 84. 



Fig. 20. Fragment of concretion, X 84. 



Eupathistoma natans, p. 437. 



Fig. 21. Shell of male, seen from right side, 



Fig. 22. „ „ below 



Fig. 23. Mandible, X 84. 



a, b. Processes of same, X 210. 

 Fig. 24. Oral sense-organs, X 210. 

 Fig. 25. End of vermiform foot, X 210. 

 Fig. 26. Post-abdominal lamina, X 84. 



Cyclasterope tenera, p. 433. 



Fig. 27. Right valve of lamina, seen from inside, X 30. 

 Fig. 28. Inner branch of antenna, X 84. 

 Fig. 29. Post-abdominal lamina, X 84. 



PLATE XLV. 



Sarsiella hanseni, p. 438. 



Shell of female, seen from right side, 



„ ,, above, 



Left valve, seen as transparent object, 

 4. Shell of male, seen from left side, 

 Antennule of male, X 84. 

 Inner branch of antenna, 6 , X 210. 

 Mandible of female. 



„ male. 



End of vermiform limb, X 210. 

 Post-abdominal lamina, X 120. 

 Fig. 11. Hairs from dorsal cushion, X 300. 

 Fig. 12. Copulative organ, 6 , X 210. 



Fig. 



1. 



Fig. 



2. 



Fig. 



o 

 O. 



Fig. 



4. 



Fig. 



5. 



Fig. 



6. 



Fig. 



7. 



Fig. 



8. 



Fig. 



9. 



Fig. 



10. 



!• X 50. 



