62(1 FAMILY XXV. 11ISTEK1D.K. 



following ; prosternum broader than long, truncate at tip ; mesoster- 

 num truncate ; front tibia? dilated and two-toothed. Six species are 

 listed from the United States, two of which have been taken in In- 

 diana, while another perhaps occurs. 



KEY TO INDIANA SPECIKS OF BACANIUS. 



a. Pro- and mesosterua smooth or very sparsely punctured ; elytral punc- 

 tures simple, rounded. 



&. Subhumeral and first dorsal stria? of elytra both entire, the latter not 



arching at base; pygidiuru very minutely punctulate. MISELLUS. 



lilt. Sublimm-nil stria* abbreviated at apex, first dorsal short; pygidium 



distinctly punctured. 1201. TANTILLUS. 



da. Pro- and inesosterna coarsely punctate; first dorsal stria* entire, broadly 



arching at base; elytral punctures elongate, substrigose. 



1202. PUNCTIFORMIS. 



B. miscUus Lee., brownish-red, length .s mm., is recorded from 

 "the Middle States region." 



1201 (3645). BACANIUS TANTILLUS Lee., Proc. Phil. Acad. Nat. Sci.. 1853, 



291. 



Broadly oval, convex. Dark reddish-brown, shining. Thorax distinctly 

 but not densely punctured. Elytra more coarsely punctured than thorax ; 

 the subhumeral stria abbreviated at base and apex. Pygidium strongly in- 

 tlexed, rather coarsely and distinctly punctured. Length 1-1.2 mm. 



Monroe County; scarce. June 0. Sifted from debris of beech 

 stump. Larger and less convex than the next species. 



1202 (3646). BACANIUS PUNCTIFORMIS Lee., Proc. Phil. Acad. Nat. Sci.. 



1853, 288. 



Rounded-oval, subglobose. Dark brownish-red, moderately shining. Tho- 

 rax finely and sparsely punctured. Elytra with dense aciculate, elongate 

 punctures. Length 0.75 mm. 



Marion, Putnam. Dubois and Posey counties; scarce. March 

 25-July 4. Taken while sifting in early spring and also beneath 

 bark of half decayed elm logs. Probably more common than indi- 

 cated, but overlooked on account of minute size. 



XII. ACRITUS Lee. 1,Sr>:*. (Gr., "indistinguishable.") 



The species of this genus are very minute and may be known by 

 the four-jointed hind tarsi and distinct scutellum. As in the two 

 preceding and the following genera, the scape of the antenna? is 

 lodged, when at rest, in a deep groove in front of the eye. Eleven 

 species are listed from the United States, two of which have been 

 taken in Indiana. 



