PLATE 9 
EXPLANATION OF FIGURES 
Spermatogonial chromosomes of other species. 
106 Splitting of the metaphase chromosomes—punctulata. 
107 Typical anaphase—punctulata. 
108 and 109 Metaphase showing the usual twenty-two chromosomes— 
punctulata. 
110 and 111 Metaphase—ancocisconensis. 
112 and 113 Metaphase—vulgaris. 
114 Metaphase—purpurea. 
Abnormal mitoses 
115 A spindle containing only one large chromatin element. 
116, 117, and 118 An interesting arrangement of three abnormal spindles. 
Figure 118 stands perpendicular to the plane of figures 116 and 117. 
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