134 IOWA ACADEMY OF SCIENCES. 



united and are more chitinous. The fleshy anal process of the young larva 

 is represented by a chitinous oval spine. On either side of the base of this 

 oval spine can be seen a small tubercle which may represent some of the 

 developing abdominal teeth. Each segment is provided with conspicuous 

 hairs which are shortest at the division of the segment. 



Segments seven and eight contain a tube extending longitudinally, and 

 sends out two small, round branches in the seventh segment and terminates 

 in two short curved branches which extend nearly to the tip of the notched 

 oval process. This tube cannot be traced beyond the seventh segment, and 

 probably represents the developing genital organs. 



LARVA AND PUPA. 



The full grown larva and pupa are described as follows: 



Color, in general, bluish green; antennae and legs more yellowish; 

 "broadly oval in outline; widest at the middle of the abdomen;" head dis- 

 tinctly separated from the pronotum; "including the eyes it is as wide as 

 the mesonotum at middle;" front margin broadly rounded; but not lobed as 

 in the adult, and furnished with numerous hairs. Frontal cones, obsolete; 

 eyes are of a black color, large, reaching the posterior margin of the head, 

 and have a granular appearance. The antennaa differ from the adult form 

 in being thicker and therefore appear to be somewhat shorter. The lateral 

 hairs are more conspicuous. No essential difference in the mouth-parts. 



The anterior pair of legs thicker than in the imago; tarsus about the 

 same width as the tibia, and the articulations not so marked as in the 

 adult, thus giving the tibia and tarsus a more blended appearance. The 

 second pair of legs virtually the same as the first, but the third pair has 

 been developed so that in the adult they will be fitted for leaping. 



The mesonotum presents three main divisions, as in the adult, but not so 

 clearly defined. 



The metauotum is moderately distinct, having the two divisions but 

 faintly marked, and joins the first abdominal segment by a wavy line. 



The wing-pads are smooth, shining, and diverge posteriorly, not quite 

 attaining the apex of the second abdominal segment. The anterior ones are 

 larger and wider than the posterior ones, but the latter project internally 

 and posteriorly. During the development of the larva the venation and 

 folding of the wings cannot be seen, but when about to transform the vena- 

 tion and folding are usually quite distinct. 



The abdomen is composed of eight segments, is widest at the middle; 

 tapers gradually at the base, but strongly at the top. The first segment is 

 quite short, as wide as the metanotum, and the dorsal surface is ornamented 

 with numerous reddish lines passing obliquely outward and forward from 

 .he central portion. 



The second segment is nearly twice as long as the first and distinctly 

 separated from it. The third is a little longer and wider than the second, 

 the fourth being widest of all, but about equal in length with the fifth. The 

 last three segments are rather indistinctly separated, much shorter, more- 

 over, and beginning at the latter half of the sixth are more chitinous than 

 the preceding ones. The lateral part of the first five segments especially 

 are separated by slight constrictions, giving them a bulged appearance. 

 The sides of the abdomen are furnished with hairs, which are larger and 

 more numerous on the central portion of each segment, growing smaller 



