Entomology of tJie Illinois River. 199 



longer than broad at base, a continuous close fringe of 

 soft hair about as long as the basal breadth of a tooth 

 extending along the margins of the teeth, over their 

 apices, and across the intervening spaces. Teeth sooty 

 brown within, with a median pale streak ; upper tooth 

 slightly smaller, with two minute dark rings on inner 

 face, lower pair with a seta attip. Stigmatal plates broad- 

 oval, with dark brown centers encircled by two yellow- 

 ish rings, the outer paler, anal prominence elevated' 

 membranous, transparent, with a pair of transparent, 

 tapering appendages each side, distinctly two-jointed, 

 tips visible from above [Fig. 25]. 



Symplecta. 



S. punctipennis Mdg. [Fig 26-28.] 



The pale cylindrical larva [Fig. 26] of this common 

 little tipulid seems quite at home in the shore of Quiver 

 Lake at Station C, examples being found at the same time 

 with Tdbanus atratus larvae by passing the sand through 

 a sieve. It w^as perhaps this that the tabanids were 

 feeding on. The larvse were noted as especially abund- 

 ant on Ma3^ 17. A single example was taken near the 

 margin of Matanzas Lake, Aug. 24. Larvte taken May 

 17 gave imagos within a month. Dec. 13 an imago 

 was taken at Station D, another was seen Mar. 26, and 

 at Station G, Apr. 10. a female was noted flying about 

 on the shore, patting the tip of her abdomen against 

 the moist sand, presumably ovipositing. Oviposition was 

 still going on freely Apr. 25. Our general collections show 

 that adults are very abundant in April and May, nearly 

 all our specimens being taken in these months. Again, 

 July 23, one appeared at Station C; and our collections 

 contain two taken in August, and two in October. They 

 occurred mostly in grassy places, in meadows, and in 

 fields of grain, but one example was taken at an electric 

 light. As regards distribution in the State, thev wera 



