PLATE I. 



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g. 1. Camptocercus redirostris^ post-abdomen of female. 



g. 2. do. post-abdomen of male. 



g. 3. do. male. 



g. 4. Camptocercus biserratiis^ head. 



g. 5. Camptocercus latirostris^ head of male. 



g. 6. do., head of female. 



, 7. Camptocercus lillgehorgii^ head. 



, 8. do., post-abdomen of female. 



9. Acroperus leucocephalus^ post-abdomen of male. 



10. Acroperus angustatiis^ '^ ^' 



11. Alona teniiicaudis^ post-abdomen. 



12. Alona dentata^ post-abdomen. * 



13. do. female. 



14. Alona elegans. 

 . 15. Alona intermedia. 



16. Pleuroxus hastatus. 



17. Leptorhy melius falcatus. 



18. Phrixura rectirostris, 



19. Eurijcercus lamellatus, first foot of female. 



20. Alona sanguinea? shell markings. 



21. Monospilus dispar; 21a. do., head seen from in front. 



Figures 19-21 original, others from Kurz, P, E. Mueller and Schoedler. 



