EXPLANATION OF PLATE B. 



1. Molicerta ringens ....... 



2. Trochal disc of Melicerta ringens, from above 



3. Limnias ceratophylli ...... 



4. Trochal disc of Limnias ceratophylli, from above . 



5. Rotifer or Philodina ...... 



6. Synchaeta Baltica ....... 



7. Eotifer rnacrurus 



8. Brachionus Bakeri 



9. Philodina or Rotifer ...... 



10. Euchlanis ........ 



11. Triarthra 



12. Actinurus Neptunius 



13. Megalotrocha 



14. Stephanoceros Eichhornii ..... 



15. 16. Floscularia ornata 



17. Brachionns pala 



IB. Philodina or Rotifer ...... 



19. Lacinularia socialis ...... 



20. Stephanops cirratus ...... 



21. Brachionns Bakeri ...... 



22. Pterodina patina ....... 



23. Salpina 



24. Euchlanis ........ 



25. Dinocharis pocillnm ...... 



26. Mastigoccrca carinata ...... 



27. Notommata tigris ....... 



28. 29. Hydatina senta 



30. Notommata longiseta 



31, 32. Lacinularia socialis ...... 



33. Notommata aurita ...... 



34. Anursra striata 



j-Leuwenhoek, 1703-1705 



Easier, 1759 

 [ Baker, 1753 



Eichhorn. 1775 



Joblot, 1718 

 Brady, 1755 



-MtUler, 1776-1786 



