OF THE GERM CELLS OF MEfAZOA. 



233 



Anasa sp., Figt. 79-S3. 



Fig. 79. Spermatogonic nucleus, rest stage. 

 Fig. 80. Spermatogonic monaster, polo view. 

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

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



Fig. S3. Lateral view of (bur bivalent chromosomes, monaster stage of first maturation mitosis, the poles of the 

 spindle outside of the plane of the section. 



Metapodiui terminalis, Figs. 84-37. 



Fig. 84. Spermatogonic nucleus, rest singe. 



Fig. 85. Spermatogonic monaster, pole view. 



Fig. 8(i. Nucleus of first spermatocyte, telaphase. 



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



Ohariesterus anUnnalor, Figs. SS-!)0. 



Fig. 88. Nucleus of first spermatocyte, telaphase. 



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



Fig. 90. Pole view of the same stage. 



Ali/ilits pilosidm, Figs. 91-95. 



Fig. 91. Spermatogonic nucleus, rest, stage. 



Fig. 93. Spermatogonic monaster, pole view. 



Figs. 98, 91. Nuclei of first spermatocytes, rest stage. 



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



Plate III. 



Alydus eurinus, Figs. 96-102. 



Fig. 90. Spermatogonic monaster, pole view. 



Pig. 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. 



Gorizus lateralis, Figs. 10S-106. 



Fig. 103. Nucleus of first spermatocyte, telaphase. 

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



Fig. IOC. Oblique view of the spindle of the first ma,tura,fion mitosis, before the chromosomes have taken their 

 definite position in the equator. 



Ilarmostes 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, fust maturation mitosis. 



Fig. 118. Lateral view of the same stage, showing all. the chromatin elements. 



