PLATE 8 



EXPLANATION OF FIGURES 



Nereis. Development in KNC 

 30 to 33 Four days in KNC m/100000 from stage just before first cleavage. 

 34 to 36 Five days in KNC m/100000 from stage just before first cleavage. 



37 Six days in KNC ?n/1000CO from stage just before first cleavage. 



38 Two days in KNC m/50000 beginning twelve hours after fertilization. 



58 



