38 



ORIGIN OF THE METAZOA 



(A). Gonium pectorale 



(B). Eudorina illinoiensis 



Fig. 9. Colonial flagellates. Flagellates such as Gonium and 



Eudorina exist in a colonial form. The colony is active and thus 



differs from the palmella stage shown in Fig. 8. 



(A) From Grasse after Migula. (B) From Grasse after Merton. 



