1104 pa.miIjV Lin. — cmrysomfcud.h. 



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

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

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

 oljlong, intervals nearly flat, trans\ersely, densely rugose; tips more nar- 

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



Lake, Jlar.shall, Koscitisko Mnd Vigo counties; common. May 

 12-AiTS'nst 20. Oimmu's on leaves and gtems of sedges and arrow- 

 alum along borders of ponds and lakes. I\lating I\Iay 21 and June 

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

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

 typical suhlilis. They are probal)ly to he referred to var. fulgens 

 Lee. 



20.32 (0,537). DoNAciA KrooSA Lee, Proc. Amer. Phil. Soc.. XVIII, 1878, 

 415. 

 Resembles nKbtilix clo.-^ely in form and color. The anteunoe are longer 

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

 rax slightly constricted at middle, sni-l'ace more densely and finely punc- 

 tured. Length 8.5 mm. 



Two specimens tak'en at Bass Lake and Lake >\Iaxinkuckee, Au- 

 gust 15 and 20 were submitted to Leng, -who i)ronounced them this 

 species. Ii(> writes that he now considois rugosa a distinct specie^ 

 instead of a variety of subtiliti, and tliat it has been found to live on 

 pickerel weed, whereas subiilis lives on reeds and sedges. 



D. piimsiriillis Lac, coppery -bronzed, length 10 miu., is recorded 

 from ilichigan and Pennsylvania. 



2033 (6539). Donacia /bqualis Say. Jnurn. Phil. Acad. Nat. Sci.. III. 



1S23. 42.S ; ibid. II, 202. 

 Elongate-oblong, rather slender, subconvex. Bronzed, shining; tibitT?. 

 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 flat, feebly ruguluse; tips obliquelv trun- 

 cate. Length .5. .5-7 mm. 



Lake, Wells and Jaek.son counth^s; scarce. iMay 27-October 1-t. 

 Occurs on reeds and sedges along the boi'ders 'of marshes and 

 streams. 



2034 ((i5;!rO. Dokacia distincta Lee, Agass. Lake Sup., 1850, 2:10. 

 Elongole, slender. Cupreous, brouml: ho.-id, antennre and legs clothed 



u'lth very short, fine, whitish pubescence. Antenna^ rather slender the 

 thu-d 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 



