PLATE XV. 



ElG. 



1. Bairdia inflata. Carapace, seen from left side. 



2. — — „ ,, above. 



3. — — ,, ,, below. 



4. — — ,, ,, front. 



5. Cypris (jihha. Carapace, seen from right side. 



6. — — „ ,5 above. 



7. Pontocypris mytiloides. Carapace, seen from left side. 



8. — — „ „ above. 



9. Paracypris polita. Right valve, seen from outside. 



10. — — ,, ,, above. 



11. Cytheridea torosa. Carapace, seen from left side. 



12. — — — ,, above. 



13. Cy there mirabilis. Carapace of male, seen from above. 



14. 15. — — Outlines of the young shell. 



16. — — Carapace of male, seen from below. 



17. Cyfhere Logani. Left valve of female, seen from outside. 



18. — — ,, ,, below. 



19. Cythere ylobulifera. Carapace, seen from below. 



20. — — ,, ,, above. 



21. Cytherura concentrica. Carapace, seen from below. 



X 40 

 (Oban, Raised-beach.) 



X 40 (Hornsea.) 



X 40 

 (Oban, Raised-beach.) 



X 40 

 (Oban, Raised-beach.) 



X 40 (Mundesly, Crag.) 



X 40 (Dryleys.) 



X 40 (Elie.) 



X 84 (Dryleys.) 

 X 84 



