THE LEAF BEETLES. 1221 



■2-2o<j (7000). Systena elongata Fabr., Ent. Syst, Supp., 1798, 99. 



Elongate-oval, moderately convex. Piceous with a slight bronsied lus- 

 tre ; elytra each with a yellow stripe on middle reaching nearly to apex ; 

 antennte brownish ; legs reddish, hind femora piceous. Head coarsely and 

 closely punctate. Thorax one-fourth wider than long, sides feebly curved ; 

 disk convex, coarsely and closely punctate. Elytra distinctly wider at base 

 and more finely and sparsely punctate than thorax. Length 3-4 mm. 



Posey Couilty ; rare. April 12. Beaten from wild grape. 



2260 (7003). Systena t^niata Say, Long's Sec. Exped., 1824, 294; ibid. 



I, 195. 



Elongate-oval. Color variable, usually 

 reddish or brownish-yellow, shining; elytra 

 each always with a paler median stripe; un- 

 der surface and narrow margins of thorax 

 usually piceous; antennre and legs reddish- 

 br()\-\-u. Thorax one-fourth wider than long, 

 sides feebly rounded, surface finely and 

 sparsely punctured. Elytra distinctly wider 

 than thorax, finely, shallowly and rather 

 densely punctate. Length 3-4.5 mm. (Fig. 

 543.) 



Throughout the State; freqitent. 

 JMav 16-.July 25. Occurs on ragweed, 



, . ^ „ ^ 7 * rm, 1''8- 543. X 9. (After Foite.) 



horse^veed, flowers or Cornel, etc. The 



form above described is var. Maiida T\relsh., the only variety so far 

 noted in the State. A variet}^ with median pale stripe of elytra 

 much naiTower is also Icnowm. (Fig. ^iO.) 



2261 (7002). Systena marginalis III., Mag. fur Insect., VI, 1807, 150. 

 Elmigate-oval, subdcpressed. Pale dull yellow, scarcely shining; sides 



of thorax and elytra very narrowly piceous ; anteimie with the terminal 

 halves of the outer joints piceous. Head alutaceous, sparsely and regu- 

 larly punctate. Thorax one-third wider than long, not broader at base 

 than apex, sides regularly curved ; disk coarsely, not closely punctured. 

 Elytra distinctly wider at base than thorax, rather densely and coarsely 

 punctate. Length 3.5-4 mm. 



Lake and Marshall counties; scarce. July 11- August 21. Oc- 

 curs on oak. 



LXXT. DiBOLiA Chev. 1834. (Gr., "two -f spine.") 



Small oval or oblong species having the head rounded, retracted 

 within the apex of thorax; front earinate with distinct tubercles; 

 antennae at least half as long as body, the outer joints a little 

 stouter; thorax Ijroader than long, much narrowed in front; elytra 

 oval, not wider than base of thorax, with regular rows of punc- 

 tures; hind femora strongly dilated, tibiae slender, broader and 



