372 J. T. PATTERSON. 



PLATE VI. 



FIG. 25. A to H, Series of sketches from Lot III of the free larvae listed in 

 Table III. This figure shows the great variation in size of the larvae from a single 

 caterpillar. They are all drawn to the same scale. 



FIG. 26. Detailed drawing of a section of one of the embryos seen in Fig. 13. 

 It shows the relation of the inter-embryonal substance and involucres to the 

 embryo. X 187. 



