EMBRYOLOGY AND LARVAL DEVELOPMENT OF TELEOSTEAN FISHES. 1 33 



Fig. 122. — Mature unfertilized egg. 



Fig. 123. — Egg showing advanced stage in differentiation d 

 embryonic stueld. 



Fig. 124. — Egg 48 hours after fertilization. 



Fig. 125. — Egg 4 days after fertilization. 



Fig. 126. — Newly hatched fish, actual length 4.3 mm. 

 APELTES QUADRACUS. 



