. 
HEREDITY OF PIGMENTATION vas 
Fig. 8 Pure F. heteroclitus, three and one-half days old. Heart beating but 
no circulation. Shows the yolk chromatophore ring about the edge of the hollow 
vesicle under the embryo. X 25. 
Fig.9 F. majalis egg hybrid, seven days old. Shows both crops of head chro- 
matophores. X 25. 
