1104 FAMILY I, III. CHRYSOMETJD.K. 



rax slightly longer than wide, sides almost straight, disk transversely ru- 

 gose, with punctures between the wrinkles; median line shallow but dis- 

 tinct. Elytra each with two shallow impressions near middle: punctures 

 oblong, intervals nearly Hat. transversely, densely rugose; tips more nar- 

 rowed than in the preceding species, squarely truncate. Length 7-10 mm. 



Lake, Marshall, Kosciusko and Vigo counties ; common. May 

 12-August 20. Occurs on leaves and stems of sedges and arrow- 

 alnm along borders of ponds and lakes. Mating May 21 and June 

 20. In a form from Lake Comity the females are much more ro- 

 bust, more convex, and more shining, with shorter thorax than in 

 typical siiulilix. They are probably to be referred to var. fuhjcns 

 Lee. 



20M2 ;r>:i7). DUXACIA KUfiOSA Lee.. Proc. Amer. Phil. Soc.. XVIII, 1S7S. 



415. 



Resembles siil>lilin closely in form and color. The antenna? .are longer 

 and more slender, with the third joint distinctly longer than second. Tho- 

 rax slightly constricted at middle, surface more densely and finely punc- 

 tured. Length S.5 mm. 



Two specimens taken at Bass Lake and Lake Maxinkuckee, Au- 

 gust 15 and 20 were submitted to Long, who pronounced them this 

 species. He write-; that lie now considers rn</<>sa a distinct species 

 instead of a variety of xithlilix, and that it has been found to live on 

 pickerel weed, whereas siihtilis lives on reeds and sedges. 



D. ptn'osii-itllix Lac., coppery-bronzed, length 10 mm., is recorded 

 from Michigan and Pennsylvania. 



2(>:::: (<;:>:;'.. DOXACIA .i:<jt'AUS Say. Jouni. Phil. Acad. Xat. Sci.. III. 

 1S2. ,. 42S; ibid. II, 202. 



Elongate-oblong, rather slender, subconvex. 1'ronzed. shining; tibia?, 

 tarsi and base of femora reddish-brown. Second and third .joints of an- 

 tenna? equal. Thorax as long as broad, median line distinct, sides with a 

 rounded tubercle before the middle; disk somewhat uneven, finely and 

 densely punctate. Elytra with two shallow, subsutural. transverse impres- 

 sions near the middle: intervals fiat, feebly rugulose ; tips obliquely trun- 

 cate. Length ">.."> -7 mm. 



Lake, Wells and -Jackson counties; scarce. May 27-Octoher 14. 

 Occurs on reeds and sedges along the borders of marshes and 

 streams. 



20P.4 ir,::ri). DONAC IA IHSTINCTA Lee.. Agass. Lake Sup.. isr0, 2:',i;. 



Elongate, slender. Cupreous, bronzed; head, anteniue and legs clothed 

 with very short, line, whitish pubescence. Antenna' rather slender, the 

 third joint nearly one-half longer than second. Thorax quadrate, narrowed 

 near base, angles prominent, sides with blunt tubercles; disk sparsely, 

 irregularly and rather finely punctate, the median line distinct for nearly 



