PLATE LXIL 



Conchmcilla lacerta (male). 



Figure 



1 . Antenimle and frontal tentacle. 



2. Part of principal seta of antennule, with marginal cilia, more highly magnified. 



3. Base of secondary branch of antenna. 



4. Apical portion of mandible. 



Conchascia magna. 



■5. Shell of male, seen from left side, x 84. 



6. Antennule and frontal tentacle of male. 



7. Part of principal seta of same, more highly magnified. 

 7a. ,, ,, ,, ,, seen from side. 



8. Secondary branch of antenna of male. 



9. Foot of first pair (male). 



10. Caudal lamina 



1 1 . Copulatory organ of male. 



12. End of frontal tentacle, female. 



13. Secondary branch of antenna, female. 



Salocypris concha (male). 



14. Shell ; valves open and seen from within, x 24. 



15. Frontal tentacle and antennule. 



16. Secondary branch of antenna. 



17. Mandible and palp. 



18. Maxilla of first pair, with appendage. 



19. Caudal lamina. 



Streptoleheris favosa. 



20. An imperfect caudal lamina. 



21. One of the ungues of the same. 



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