366 J. T. PATTERSON. 



PLATE III. 



FIG. 15. Photomicrograph of the middle portion of longitudinal section of a 

 small caterpillar. A fat body containing a polygerm lies just below the intestine. 



X44- 



FIG. 1 6. Photomicrograph of a portion of a section of a polygermal mass which 



was about to begin disintegration. X 44. 



FIG. 17. Photomicrograph of a section of a polygermal mass undergoing dis- 

 sociation. X 44. 



FIG. 1 8. Photomicrograph of a mass of free larvae from the body cavity of the 

 caterpillar. Note that each embryo is still surrounded by the involucres. X 44. 



Reference Letters Used in Plates IV. -VI. 



A.E., Abortive Embryo. I.S., Inter-embryonal Substance. 



A.T., Adipose Tissue. N.M., Nucleated Membrane. 

 C., Clear space left by contraction of O.I., Outer Involucre. 



Precipitated Material. P.D., Primary Division of polygerm. 



E.N., Embryonic Nuclei. P.E., Primitive Embryo. 



G.L., Granular Layer. P.M., Precipitated Material. 

 /./., Inner Involucre. 



