PLATE 2X. 
ILLUSTRATING THE PAPER OF BRADNEY B. GRIFFIN, p. 163. 
Fic. 7. Second polar spindle, still tangential in position. Slightly later 
than Fig. 6. 
Fic. 8. Second polar spindle. Spermhead with amphiaster ( ¢ ). 
Fic. 9. Second polar telophase, showing centrosomes divided. Sperm- 
head and amphiaster ( ¢ ). 
Fic. 10. Shortly before copulation of pronuclei, showing male pronucleus 
( g) with powerful asters, and the female vesicles ( 2 ) devoid of asters. 
Fie. 11. Copulation of pronunclei. 
Fic. 12. Somewhat later stage, segmentation nucleus elongating. 
