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. 



Philomedes sculpta, p. 434. 



Fiff. 15. Shell of male, seen from left side, 1 „. 

 " X 25. 



Fig. 16. „ „ above, J 



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



Fig. 18. Inner branch of antenna, tj , X HO. 



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



Fig. 20. Fragment of concretion, X 84. 



EupatMstoma natans, p. 437. 

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

 Fig. 22. „ „ below, J ^ ' 



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. 

 Fig. 1. Shell of female, seen from right side, "| 

 Fig. 2. „ „ above, [ ^ ^^^ 



Fig. 3. Left valve, seen as transparent object, 

 Fig. 4. Shell of male, seen from left side, 

 Fig. 5. Antennule of male, X 84. 

 Fig. 6. Inner branch of antenna, d , X 210. 

 Fig. 7. Mandible of female. 

 Fig. 8. „ male. 



Fig. 9. End of vermiform limb, X 210. 



Fig. 10. Post-abdominal lamina, X 120. 

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

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



