EXPLANATION OF PLATES. 



All figures were drawn with the aid of the Abbe camera lucida at the level of the 



base of the microscope. Unless otherwise specified, all figures were drawn from living 



material. 



Plate XVI. 



Lep totheca fusiformis. 

 Fig. I. Spore from above. X 1,500. 

 Fig. 2. Spore from capsular side. X 1,500. 



Leptotheca scissura. 

 Fig. 3. Young trophozoite. X 700. 



Fig. 4, 5. Large vegetative trophozoites in which spherules are well developed. X 700. 

 Fig. 6. Portion of trophozoite more highly magnified to show structure of spherules. X 1,500. 

 Fig. 7. Sporulating trophozoite. X 700. 

 Fig. 8. Spore from above. X 1,500. 



Leptotheca lobosa. 



Fig. 9. Contracted vegetative trophozoite. X 1.500. 



Fig. 10. Vegetative trophozoite with large pseudopodium of ectoplasm. X 1,500. 



Plate XVII. 



Fig. II. Leptotheca lobosa. Spores still united at the sutural line. X 1,500. 



Leptotheca glomerosa. 



Fig. 12. Sporulating trophozoite. X 1,500. 

 Fig. 13. Spore from above. X 1,500. 



Ceratomyxa mesospora. 



Fig. 14. Trophozoite drawn from Giemsa smear. X 1,500. 



Fig. 15. Spore from above. X 1,500. 



Fig. 16. Spore from the capsular side. X 1,500. 



Ceratomyxa sphairophora. 



Fig. 17-19. Vegetative trophozoites. X 700. 



Fig. 20. Portion of trophozoite showing structure of spherules. X 1,500. 



Fig. 21. Young vegetative trophozoite. X 700. 



Fig. 23. Spore from above. X 950. 



Ceratomyxa taenia. 



Fig. 24. Sporulating trophozoite. X 700. 



Plate XVIII. 

 Ceratomyxa sphairophora. 

 Fig. 22. Sporulating trophozoite. X 700. 



Ceratomyxa taenia. 



Fig. 25,26. Spores from above. X 700. 



239 



