94 



BUIvLBTIN OF THE BUREAU OK FISHERIES. 



Fig. I. — Fertilized egg with (ully developed blastodisc <BD). 



Fig. a. — Egg with blastoderm of 2 cells. 



Fio. 3.— Egg with blastodenn of 4 cells. 



Fig. 4.— Egg with blastoderm of 8 ceUs. 



__./»« 



Fig. s. — Egg with blastodenn in late cleavage stage. 

 PB. ijeriblast. 



-tf* 



T--M 



Fig. 6.— Egg with blastodenn showing genn ring (GR) fully 

 differentiated and an early stage in the differentiation of the 

 embryonic shield (ES). PP. posterior pole of blastodenn. 



TAUTOGA ONITIS. 



