264 Illinois State Laboratory of Natural History. 



Parasites. — On opening a somewhat shrunken pupal 

 skin I found within it, in the place of the pupa, a well- 

 marked and almost fully-developed specimen of Smicra 

 microgaster. 



_£(7^.— Length about 1 mm., greatest thickness .2 mm.; 

 otherwise very similar to that of O. cincta, and laid in 

 similar masses. 



Larva newly ?tatched. — Length 1 mm. This when hatched 

 is much more slender than that of cincta, paler in 

 color, especially beneath, the intermediate segments more 

 elongate. In an older example 6 mm. long, the charac- 

 teristic coloring of the species is well developed. 



Larva, mature [Fig. 60]. — Length 12-15 mm., greatest 

 width 2.8-3.6 mm., tenth segment 1.5-2 mm. wide, last 

 segment, near base, 1.25 mm., its length 1.5-1.8 mm., 

 about twice the length of anal slit. Shape as in 0. cincta, 

 often more depressed and broader, colors about as 

 in cincta, but distinctly different in arrangement, 

 and darker when dry. An approximate pair of 

 dorsal pale vittae, usually separated by a narrow 

 dorsal dark line which is sli2,htlv dilated on the 



