696 McAllister. — Nuclear Division in Tetraspora lubrica. 
Fig. 22. Later telophase — the nuclear membrane is now present and the cell-plate partly formed. 
Fig. 23. The cell-plate appears as a definite line of granules, more conspicuous in the central 
region, but to be traced indistinctly nearly to the cell-wall. Part of the central spindle is still easily 
identified. 
Fig. 24. Fully formed daughter nuclei have moved closer together. The kinoplasm of the 
central spindle area no longer appears fibrous. The cell-plate is clearly most perfectly developed in 
the central region. 
Figs. 25, 26. The cell-plate is split in the middle and widely separated by plasmolysis. The 
cleavage cannot be traced to the peripheral wall. 
Fig. 27. Completely separated daughter-cell of the first division. 
Fig. 28. Daughter nuclei of the third division. One single large pyrenoid. 
Fig. 29. The eight cells at the close of the third division. A single deeply lying pyrenoid is to 
be seen in the central cell. 
Fig. 30. A gamete rounded up — the eye spot and cilia not yet visible. 
Fig. 31. Pyrenoids showing peripheral cleavage to form several starch masses. 
