88 ILLINOIS BIOLOGICAL MONOGRAPHS [482 



PLATE IX 



Figures 111-122. Showing stages in the development of pigment in the 

 elytron of C. repanda Dej. and C. scutellaris aber lecontei Hald. 



Explanation of Plate 



Fig. Ill, 4 to S hours after emergence, showing the longitudinal lighter areas 

 corresponding to A, B, C of the preceding figures; 112, after 12 to 15 hours, 

 showing the stripes A, B, C broken into cross bands, 3 and 4 being clearly indi- 

 cated in the stripe C; 114-118, showing stages in the development of the elytral 

 pigment in C. scutellaris lecontei Hald; 114, after 4 to 5 hours; 115, after 12 

 hours, showing particularly a well indicated cross band not appearing in the 

 adult; 116, after 15 hours, showing well marked longitudinal bands broken in 

 spots; 117, after 36 hours with similar marking indicated; 118, after 36 hours, 

 similar to 117; 119, the hind wing at emergence; 120, after 12 hours; 121, after 

 ^6 hours; 122, adult. 



