PLATE V. 



Fig. 



1. Cythere emarginata. Carapace of male, seen from left 



side. 



2. 

 3. 

 4. 

 5. 

 6. 



„ „ above. 



„ „ below, 



front, 

 female, „ right side. 

 „ separated valves. 



(Loch Gilp.) 



7. Cythere iuherculata. Carapace of female, seen from left side. 



above. 



9. — 



10. — 



11. — 



12. — 



„ „ below, 



front, 

 male, „ left side. 



„ hinge-margins. 



(Dalmuir.) 



} ^^ 



reenock new Dock. 



13. Cythere Dunelmensis. Left valve of male, lateral view. 



14. 

 15. 

 16. 

 17. 



18. 

 19. 

 20. 



seen from above, 

 below, 

 front, 

 inside. 



(Jordan Hill.) 



Right valve of female. 

 „ young. 



Hinge-margins. 



21* Cythere costata. Right valve of female, seen from out- 

 side. 



22. — — ,, „ above. 



23. — — Left vafve of male, seen from outside. 



24. — — ,, ,, inside. 



(Bridlington.) 

 (Bridlington.) 



(All magnified 40 diameters.) 



