THE LEAF BEETLES. 



L211 



Lake, Starke and Marshall counties ; frequent along the marshy 

 margins of lakes. May 18-May 30. 



2238 (7041). Ch^tocnema pinguis Lee, Proc. Amer. Phil. Soc, 1878, 417. 

 Short, oval, robust. Piceous-bronzed, shining; antenna? with five basal 



joints reddish-yellow, the remainder bronzed; middle and hind femora 

 bronzed, front femora and all the tibiae and tarsi reddish-yellow. Head very 

 finely alutaceous, minutely and sparsely but distinctly punctate. Thorax 

 nearly twice as wide as long, sides more curved than in minuta; surface 

 faintly alutaceous, very finely and sparsely punctate. Elytra but slightly 

 wider than thorax, widest at middle ; surface distinctly alutaceous, umbone 

 not prominent; striae feebly impressed, more deeply on sides, their punc- 

 tures fine and well separated; intervals smooth. Length 1.8-2 mm. 



Lawrence County; scarce. May 11. Resembles minuta in form, 

 color and size, but differs in the basal punctures of thorax and in 

 the less impressed and more finely punctured elytra! striae and the 

 more distinctly punctate head. A member of the Austroriparian 

 fauna. 



2239 (10,462). Ch^tocnema opulenta Horn, Trans. Amer. Ent. Soc, XVI, 



1889, 264. 



Oval, moderately convex. Brassy-bronze, not alutaceous ; antennae red- 

 dish-yellow at base, gradually darker to tips; femora bronzed, tibiae and 

 tarsi reddish-yellow. Head finely wrinkled, not punctured. Thorax nearly 

 twice as wide as long, sides regularly curved, basal marginal line deep, en- 

 tire; surface coarsely, deeply and closely punctate. Elytra slightly wider 

 at base than thorax, strife feebly impressed, punctures very coarse, deep 

 and closely placed ; intervals feebly convex, finely but distinctly punctulate. 

 Length 2-2.5 mm. 



Starke and Wayne counties; scarce. May 19-May 26. Swept 

 from the foliage of mint in low, moist places. Known heretofore 

 only from California, Nevada and New Mexico. 



2240 (7050). Ch^tocnema paecepunctata Crotch, Proc. Phil. Acad. Nat. 



Sci., 1873, 74. 



Oval, robust. Piceous-bronzed, shining; tibiae, tarsi and base of an- 

 tennae paler. Thorax twice as wide as long, sides curved ; disk finely alu- 

 taceous, sparsely and rather finely punctate. Elytra one-fourth wider at 

 base than thorax, striae feebly impressed, the rows of punctures large, round 

 and rather close-set; intervals narrow, not punctate. Length 1.5 mm. 



Marion County; rare. June 12. Swept from low-ground herb- 

 age. Known from Massachusetts, Pennsylvania, Ohio and south- 

 ward. 



