378 JAMES W. MAYOR. 



EXPLANATION OF PLATE. 



PLATE I. 



Myxidium lieberkuhni Butschli from the urinary bladder of Lucius Indus. All 

 drawings made with the camera lucida from fresh preparations of the urine. 



FIG. i. Plasmodial stage showing fine pseudopodia for attachment to bladder 

 wall. X 880. 



FIG. 2. Two spores as arranged in pansporoblast. X 4,000. 



FIG. 3. Small plasmodial stage showing haematoidin crystal. X 880. 



FIG. 4. Plasmodial stage showing two pansporoblasts each containing two 

 spores. X 880. 



FIG. 5. Single spore showing sporoplasm and polar filaments. X 4,000. 



