28o 



TRANS. ST. LOUIS ACAD. SCIENCE. 



Fi°-. 20. A. pometaria-.—a, male moth; 6, female do., natural size; c, joints of her 

 antenna;; d, joint of her abdomen, enlarged. 



Fig. 21. A. pometar\a:—a , male chrysalis; b, female do., the hair-lines showing natu- 

 ral lengths. 



Spring Canker-worm {Paleacrita vernatd). 



[Fig. is-] 

 [Fig. 14.] 



6 <% 



[Fig. 16.] 



Fall Canker-worm (Am'sopteryx pometaria). 



