100 FAMILY IT.^CAEABID.^. 



Till' iii''iiilt('i-s of this ^'('iius rcsrinhlc tlioso of I'lfrosticltus niid 

 are found in the same situations though less frequently. Of seven 

 specimens dissected by Dr. Forbes, insects such as canker worms 

 and caterpillars had foi-med 93 per cent, of the food, so that they 

 Miay he class'-d as liitilily IxMie-ficia.l. 



Kor litcralui'c treating' of the genus set' llie (irst two [tapers 1)\ 

 IjeConte mentioned under Fterosiichns, also the following: 



LeConte. — "Synoptic Table" in l>ull. Brook. Entom. Soc, III. 

 1880, 21, 49, 73. 



Wickharn. — "Coleoptera of Northeastern America" in Journ. 

 N. Y. Ent. Soc. Ill, 1895. 189-190. 



Thirteen species of Erarfhrus are known from the United 

 Sta.tes. Of these, six have been taken in Indiana, while another 

 may occur. 



KEY TO INDIANA SI'KCIF.S OK EVAHTl I H TS. 



(I. Tliui-a.v sulxiuadrnU', but little enustricted at linse; iirosteniiim dt'ejilv 

 suleate. 

 h. Thorax wider thau Idiiii:: scntellav stria wantiii.i;. 

 c. Stria^ of elytra stn.n^ly imueturi'd. 



d. Margin of thorax wide, especially at base. 14r>. seximphessis. 

 (Id. Margin of thorax narrow, nearly uniform. 1J:G. sioiLiJiTrs. 



cc. Strife of elytra finely punctured. t4T. American; s, 



bh. Thorax as long as wide : seutellar stria present, rather long. 



148. ORBATIS. 



(to. Thorax strongly constricted beliind ; prosteruum feebly or- obsoletely 



sulcate. 



c. Hind angles of thorax promineid ; stri:e of elytra tine. colossus. 



cc. Hind angles of thorax shorter, less pmminent; striie of elytra deep. 



/. Sides of thorax much rounded. 149. sodalis. 



ff. Sides of thorax less rounded, more oblicjue. 150. firtivcs. 



145 (GIO). EvAKTHRi's SEXiMi'KESSis Lcc, Auu. Lyc. Nat. Hist., IV. I.s4s. 

 350. 

 Elongate-oval. Black, head and thorax feebly shining; apical half 

 of antennte and tarsi reddish-brnwn : basal joints of anteniue, femora and 

 tibiae piceous. Thorax not ininctate. sides nainded. Klytra very finely 

 alutaceous, opaque; intervals flat. Length 14.5-15.5 mm. 



Southei-n half of State, frequent; less so in the northeiai coun- 

 ties. April 29-November 19. Occui's mostly on dry wooded slopes 

 beneath logs and stones. In this and the next three species the 

 thorax has the hind angles obtuse and the sides not sinuate near 

 base. 



