OF THE GERM CELLS OF METAZOA. 233 



Anasa sp., Figs. 70-S3. 



Fig. 79. Sperrnatogonlo nucleus, rest stage. 

 Fig. 80. Spermatogouic monaster, pole view. 

 Fig. 81. Nucleus of first spermatocyte, rest stage. 

 Fig. 82. Pole view of monaster, first maturation division. 



Fig. 83. Lateral view of four bivalent chromosomes, monaster stage of first maturation mitosis^ the poles of the 

 spindle outside of the plane of the section. 



Metapodius tcrminalis, Figs. S4-S7. 



Fig. 84. Spermatogouic nucleus, rest stage. 



Fig. 85. Spermatogonic monaster, pole view. 



Fig. 80. Nucleus of first spermatocyte, telaphase. 



Fig. 87. Pole view of monaster, first maturation mitosis. 



CJiariesterus antennalor, Figs. SS-90. 



Fig. 88. Nucleus of first spermatocyte, telaphase. 



Fig. 89. Lateral view of monaster stage of the first maturation mitosis, showing all the chromatiu elements. 



Fig. 90. Pole view of the same stage. 



Alydus pttosuliif, figs. 91-95. 



Fig. 91. Spermatogonic nucleus, rest stage. 



Fig. 92. Spermatogonic monaster, pole view. 



Figs. 93, 94. Nuclei of first spermatocytcs, rest stage. 



Fig. 95. Pole view of monaster, first maturation mitosis. 



Plate III. 



Alydus eurinus, Figs. 06-102. 



Fig. 96. Spermatogonic monaster, pole view. 



Fig. 97. Nucleus of first spermatocyte, telaphase. 



Fig. 98. Pole view of monaster, first maturation mitosis. 



Fig. 99. Lateral view of the same stage. 



Fig. 100. Pole view of monaster, second maturation mitosis. , 



Figs. 101, 103. Spermatids at close of second maturation mitosis. 



Corizus lateralis, Figs. 103-106. 



Fig. 103. Nucleus of first spermatocyte, tclaphase. 

 Figs. 104, 105. Pole views of monasters, first maturation mitosis. 



Fig. 106. Oblique view of the spindle of the first maturation mitosis, before the chromosomes have taken their 

 definite position in the equator. 



Uarmostes reflexulus, Figs. 107-117. 



Fig. 107. Spermatogonic nucleus, rest stage. 



Figs. 108-110. Spermatogonic monasters, pole views. 



Fig. 111. Nucleus of first spermatocyte, rest stage. 



Fig. 112. Pole view of monaster, first maturation mitosis. 



Fig. 113. Lateral view of the same stage, showing all the chromatin elements. 



