218 Illinois State Laboratory of Natural History. 



anal prominence large, with a lateral and inferior pair 

 of broad tubercles. 



Papa [Fig. 38].— Length 27-29 mm., diameter 5.5 

 mm. Dark reddish brown, more or less blackish. Re- 

 spiratory tubes slightly longer than in eluta, longer than 

 the distance between them ; prothorax with middle of 

 anterior portion depressed and blackened. Mesouotum 

 with a pair of acute teeth at center and a. similar tooth 

 behind each respiratory tube, the transverse suture 

 deeply and sharply impressed and blackish, in front of 

 each of the latter teeth. Wing-pads and legs black or 

 dark brown, middle tarsi often shorter than the others. 



Lateral margins of abdomen bearing a sharp tooth 

 on each division, and numerous black dots above and 

 below; posterior divisions above and below with a trans- 

 verse row of sharp spinous conical teeth, small anteriorly, 

 more numerous upon middle segments, larger and fewer 

 posteriorl3', middle teeth of ventral row wanting on third 

 abdominal, fifth to seventh abdominals with six to eight 

 teeth in ventral rows, those of dorsal rows more vari- 

 able, and unequal in size; no other teeth outside of 

 these rows. 



Last two segments [Fig. 38] bearing anteriorly large 

 spinous teeth, four ventral in a transverse row, two 

 lateral, and six dorsal, anterior inner pair very small 

 and blackish, lying between and in line with the outer 

 pair; remaining four about equal in size. Terminal cone 

 of female long, projecting beyond the posterior dorsal 

 teeth as far as their distance from the base of the eleventh 

 segment. 



Pachyrhina ferruginea Fabr. [Fig. 39, 40.] 



As stated under the preceding species, larvae of this spe- 

 cies were taken April 13 to 23 ; the first pupae were formed 

 after April 26, and most of the others by xMay 1, when the 

 first example, a female, emerged, another imago appear- 

 ing May 3. The larva had been previously found at 

 Drbana May 7 in a corn field. The imago is common, 



