204: Illinois State Laboratory of Natural HiMory. 



ward till side b\' side, then parallel to their tips, which 

 are membranous and dilated, with a pair of mem- 

 branous terminal flaps; prothorax strongly' carinate 

 on median line; mesothorax nearly smooth, a pair of 

 small tubercles over bases of wiug-pads, latter ending 

 at apex of second segment; legs blackish apically, tarsi 

 side by side, their sutures and tips quite evenly in line^ 

 latter near apex of third segment. Third to seventh 

 abdominals with transverse chitinous darker bars, stud- 

 ded with small pale conical spines with sharp blackish 

 points, each tipped with a hair; anterior divisions of 

 these segments with four ventral and three dorsal narrow 

 bars, each with a row of spines; posterior divisions with 

 a single broader bar, bearing a row of spines near its 

 anterior, and another near its posterior margin ; first 

 abdominal, and posterior bar of remaining segments 

 except last two with a pair of black dots each side of 

 middle, exterior to which is a short longitudinal slightly 

 oblique line; a similar marking beneath; lateral margin 

 irregularly spined, posterior angles of each segment 

 rather prominent. 



Eighth abdominal whitish, a few spines above, a 

 narrow and sharply prominent spinous ridge at apex on 

 each side beneath; last segment with a pair of small 

 dark finger-like appendages at base above, apex ending 

 in 9 in a pair of long, slender, tapering, connate, recurved 

 reddish brown projections, each with a minute spinous 

 tooth at outer side of apex; beneath these and applied 

 to their under sides is a similar but shorter bifid pro- 

 jection. In the d*, the upper pair are diverging, and 

 beneath them is a smaller and more obtuse pair, con- 

 tiguous through(jut, resting against the bases of the pair 

 above. 



Limnophila ? sp. {a). 



A single 9 pupa was found Aug. 24 in White Oak 

 Run, at the head of iMatanzas liake, which seems to be 

 of this genus, and I therefore describe it here. 



