THE PiEDOGENETIC FLY, MIASTOR 61 



large and are characterized by the possession of a 

 number of spherical chromatin granules which 

 are evenly scattered about in the nuclear sap. 



Fig. 18. — Miastor americana. Longitudinal section through an egg 

 with two oogonia ioogi). 6 c = blastoderm nucleus; ci2 = chro- 

 matin remains. 



Pig. 19. — Miastor americana. Longitudinal section through an egg 

 with four oogonia {odg%). 



