PLATE XIL 



Fig. 



1. Cythere WJdteii. Carapace, seen from left side. 



2. — — „ „ above. 



3. — — „ „ below. 



4. Cythere Jonesii. Left valve, seen from outside. 



5. — ■ — „ ,, above. 



6. — — „ below. 



7. — — var. ceratoptera. Left valve, seen from 



outside. 



8. Cythere antiquata. Left valve, seen from outside. ^ 



9. — — „ „ above. > 



10. — — „ „ below. ) 



1 1 . Cythere ylobulifera. Carapace, seen from left side. ) 



12. — — „ „ above. ) 



1 3 . Cytherura niyrescens. Carapace of female, seen from left side. 



14. Cytherura angulata. Carapace, seen from left side. 



15. Cytherura cuneata. Carapace of male, seen from left") 



side. ) 



16. Cytherura {similis'^). Carapace, seen from left side. 



17. Cytherura undata. Carapace of male, seen from left side. 



18. Bosquetia rohusta. Carapace, seen from left side. 



19. — — „ „ above. 



20. — — „ „ below. 



21. — — „ „ front. 



22. Poly cope orbicularis. Left valve, seen from outside. 



23. — — „ » above. 



X 40 

 (Belfast New Dock.) 



X 40 

 (Belfast New Dock.) 



X 40 

 (Belfast New Dock.) 



X 60 (Barrie.) 



X 84 (Irvine.) 

 X 84 (Oban.) 



X 84 (Loch Gilp.) 



X 84 (Loch Gilp.) 

 X 84 (Paisley.) 



X 40 (Paisley.) 

 X 60 (Dalmuir.) 



