608 FAMILY XXV. — JIISTERID.r:. 



outer with only a trace. Propygidium coarsely and sparsely, pygidium more 

 finely, punctured. Front tibijie with three teeth, the apical prominent and 

 slightly bifid at tip. Length 5-6.5 mm. 



Throughout the State; more frequent in the n(u-thern counties. 

 June lO-Septeniber IS. Occurs in putrid fungi and excrement. 

 The subhumera). fourth, fiftli and sutural stria' are often partially 

 represented In' detached punctures and the sutural rarely reaches 

 apex. 



1153a (3490). Histeb depurator inceetus Marsuel, Mon. Hist., 1854, 269. 

 A variety of depurator without trace of subhumeral stria and with the 

 epipleura tri-striate. Length 5-6 mm. 



Vigo County; scarce. June 11. 



1154 (3495). IIisTEU fuktivus Lee, Troc. Phil. Acad. Nat. Sci., 1859, 313. 

 Resembles (Jcininitor, differing onl.v in having the subhumeral stria 

 wholly absent and the apex of the prosternal lobe truncate or faintly emai-- 

 ginate, with the sides of the emargination slightly prominent. Length 

 5-6 mm. 



Wells, Vigo and Jennings comities; scarce. June 11-Septem- 

 ber 24. 



//. cnrfatus Lee, without trace of subhumeral stri-p, but with a 

 short humeral appendix, is known from T'etuisylvania and Illinois. 



Group C. 



In this group the front mai'gin of the mcsostenium is truncate 

 and tlie side pieces of ln(^so- and melasterna grooved. Seven s[)('cies 

 occnr in th(^ State. 



KEY TO SPECIES OF GROI'P C. 



0. Elyti'a liicolorcd, iilack and red; epipleura very narrow with one stria. 



1155. mMACI'LATUS. 



(Id. Klytra wholly l>lai-k: epipleura broader, with two striip. 



h. Klytra with two subhumeral sirijie, the outer entire; thorax' willi hnl 

 one marginal stria. 1156. sedeci.msikiati s. 



bb. Elytra without subhumeral stria, 

 c. Elytra with five entire dorsal stri;e. 

 (1. Thorax with two marginal stria*, the outer one short. 



c. Surface smooth. 1157. americanus. 



cr. Surface distinctly i)uncture(l. 1158. perplexus. 



'/'/. 'I'lioiax Willi only the inner stria present. 1159. ex.\ratt\s. 



cr. I<]|ylra with lour entire dorsal stria' or less. 



/. F(tuv entire doi-sal stri;ie i)resent; e])ipleura with twd stria^. 



1160. NUHir.tTs. 

 //. Three t-nlirc dmsal slri;e pi-esenl. the I'ourlli shoi't. basal; epi- 

 pleura with three stria'. 1161. poixutus. 





