Kofoid. — Development of Limax, 



PLATE IV. 



All figures magnified 490 diameters. 

 Figs. 27-30. Twenty-four-cell stage, composed of the following cells: a 5>4 -rf 5,4 ; 



a 5.3_ rf 5.3. a S-4_ d &.i. 6.3_rf6.8. a *-*-d**; tt 6-l _ rf6-l. 



Fig. 27. From the vegetative pole. 



Fig. 28. From the animal pole, showing vacuolation. 



Fig. 29. View of the right posterior quadrant (c). Vacuolation of the animal 



pole. % 



Fig. 30. Optical section along vertical axis cutting the quadrants b and d. 

 Figs. 31, 32. Twenty-four-cell stage, similar to the egg shown in Figures 27-30. 



Division of the quartet 6.2. 

 Fig. 31. View of the anterior end. Spindle in 6 6 * 2 . Polar globule present. 

 Fig. 32. Same egg from the vegetative pole. Spindles in 6 6-2 , c 6,2 , d G-2 . 



