Laboulbenia chaetophora and L. Gyrinidarum. 355 
Fig. 56. A rather earlier stage in mitosis of the nuclei shown in Fig. 55. x 2,700. 
Fig. 57. The four-nucleate stage of the ascus. The sister nuclei are paired, x 1,800. 
Fig. 58. A prophase stage of the third mitosis, x 2,700. 
Fig. 59. A later period in the prophase. x 2,700. 
Fig. 60. Equatorial plate stage in third mitosis, x 1,800. 
Fig. 61. A later period of same mitosis, x 2,700. 
Fig. 62. The daughter nuclei of the last mitosis about to form. Four of the eight shown— the 
two spindles have disappeared. Counting from the top the first and third are sisters, x 1,800. 
Fig. 63. The young spores with nuclei still attached to one pole. Two of the four non- 
functional nuclei in upper part of ascus. x 1,800. 
Fig. 64. Two young spores — a later stage than Fig. 63. The rays from the central body have 
floated in towards nucleus, x 1,800. 
Fig. 65. A later stage. The necks of nuclei have been retracted and nuclei are now spherical, 
x 1,350. 
Fig. 66. A still later stage, showing the elongating spores and the still persistent non-functional 
nuclei, x 1,350. 
Fig. 67. A single mature spore, x 900. 
Figs. 68 and 69. The resting primary nucleus of spore, x 2,700. 
Fig. 70. The primary spore nucleus in mitosis, x 2,700. 
