252 Illinois State Laboratory of Natural History, 



similar points, marked by paler or darker dots, lie near 

 the side margin of each segment, the ends of the row& 

 converging; these are irregular on the anterior part of 

 the body, and the outer row on the last segment is pro- 

 longed indistinctly to its apex. Surface covered with 

 minute hexagonal granulations, shining or opaque in 

 varying lights, sparsely hairy above and below on the 

 disks of the segments, lateral margin prominent, bearing 

 dorsally minute round spiracles on segments 1 and 3-10. 



Head small, pale dusky brownish, bisulcate above, a 

 dark longitudinal streak passing through eye, which is 

 surrounded by a fine light circle; the inner side of the 

 lateral fold beneath often shows a clear-cut pale streak 

 edged each side with darker, running from the hind 

 angles of the mouth to those of the head; clypeus- 

 notched, maxillaB with plumose hairs, antennae very 

 stnall, consisting of a single joint with two minute 

 joints on its truncate apex; eyes small, dark, not 

 prominent. 



On segments 9 and 10, beneath, a delicate opaque 

 median line, sometimes pale, often nearly obsolete, ex- 

 tends from the base to beyond the middle of each seg- 

 ment. Last segment broader at anal slit, beyond this 

 parallel-sided, beneath sulcate, a pale piliferous spot 

 each side near middle, another pair less than half 

 way from these to the tip, and an approximate pair at 

 the posterior end of the anal slit; above, an approximate 

 pair at the posterior third, and two pairs on each side 

 close to the lateral margin, one pair in front of the 

 middlp, the other near the tip. Apical fringe short, 

 plumose. 



Puparium. — This differs very little from the active 

 larva. It is usually more inflated at middle, often 

 somewhat collapsed behind, the color markings more or 

 less obliterated. 



