PLATE LXIV. 



Conchoscissa armata (female?). 



Figure 



1. Shell, valves open, x 25. 



2. Eeticulation of anterior margin of shell, more highly magnified. 



3. Frontal tentacle. 



4. End of mandible of left side (?). 



6. ,, ,, oblique view, right side (?). 



Conchscia Saddoni. 



6. Shell of female seen from left side, x 40. 



7. Reticulation of anterior margin of shell 



8. ,, of central portion of shell. 



9. Capitulum of frontal tentacle of female. 



10. „ „ „ male. 



11. Labrum (upper lip). 



12. Biting plate of mandible of female. 



13. ,, ,, ,, male. 



14. Spinous armature of a part of the principal seta of antennule, <? . 



15. Secondary branch of the right antenna of male. («) Apex of hooked process of the same. 



16. One of the caudal laminae. 



Cypris inconffruens (male). 



17. Second maxilla of left side. 



18. VerticiUate sac. 



Pionocypris vidua. 



19. Caudal rami. 



Candona pubescens. 



20. Second maxilla of 3' i right side. 



21. Shell structure. 



Conchmcilla daphnoides. 



22. Entire animal, seen from the left side. (Specimen taken off Achill Head, Ireland.) 



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