374 J- T - PATTERSON. 



EXPLANATION OF PLATE II. 



FIG. n. Longitudinal section of an advanced polygerm removed from the 

 adipose tissue of a 12-mm. caterpillar. The polygerm is n days old. The egg 

 was laid by a fertilized female. Two large asexual embryos are shown in the 

 upper end of the figure. X 148. 



FIG. 12. A mass of sexual embryos. One of several masses removed from the 

 body cavity of a 30 mm. caterpillar taken from the field. X 41. 



FIG. 13. Part of a longitudinal section of a polygerm in the body cavity of 5.5 

 mm. caterpillar. The polygerm has undergone almost complete dissociation. 

 One of the four asexual embryos present in this polygerm is seen at the right. 

 Egg laid by fertilized female. 95 hours old. X 490. 



FIG. 14. Part of a dissociated polygerm, showing a group of seven asexual 

 embryos, and a group of embryonal masses in the upper right-hand corner. All 

 are embedded in fat tissue. The polygerm is 9 days and 23 hours old. X 136. 



