78 Trans. Acad. Sci. of St. Louis. 



EXPLANATION OF ILLUSTRATIONS. 



In Figs. 1-8, the solid lines indicate males and the dotted lines, 

 females. 



Plate I. — Fig. 1. The emergence of 240 males and 213 females of 

 Philosamia cynthia, New York and Philadelphia, 1913. — Fig. 2. The 

 emergence of 46 males and 54 females of Telea polyphemus, St. Louis, 

 1913. 



Plate II. — Fig. 3. The emergence of 101 males and 82 females of 

 Telea polyphemus, Fall River, Mass., 1913. — Fig. 4. The emergence of 

 316 males and 287 females of Telea polyphemus, Augusta, Ga., 1913. 



Plate III. — Fig. 5. The emergence of 54 males and 50 females of 

 Callosamia promethea, Fall River, Mass., 1913. — Fig. 6. The emergence 

 of 123 males and 113 females of Samia cecropia, South St. Louis, 1913. 



Plate IV. — Fig. 7. The emergence of 76 males and 67 females of 

 Samia cecropia, New York, 1913. — Fig. 8. The emergence of 331 males 

 and 320 females of Samia cecropia, St. Louis, 1913. 



Plate V. — Fig. 9. The emergence of 2237 Saturniid moths in rela- 

 tion to temperature. The solid line indicates all insects observed of 

 both sexes; the broken line denotes temperature. 



Issued December 22, 1914- 



