(ilO FAMILY XXV. IIISTERID-T:. 



1159 (3509). IIisTER EXARATLS Lec, Bost. Jouru. Nat. Hist.. V, 1845, 59; 

 pi. ni. fii,'. 12. 



Also clost'ly allied to (niicricaiim, but differiuj: Ity having tlio outer 

 tlioracic stria wholly absent; the elytral striie finer, the fifth joining the 

 sutural : surface sniootli. T-ength 0.5 mm. 



Viiio and Lawfciicc (•(unilics; scarce. -Inly 1 -Inly '2'.). Taken 

 froiii decay iiii;' I'lliii^i. A(i(in<(s. 



llCd (.-'.."ilO). llisTKit .M i!iM s Lec. Col. of Kansas, is."!'.). 7. 



r.rnadl.N .ival. subc(Hi\('X. 'IMini'ax willi inner siria entire: liie (Milcr, 

 short, .-ipical. lOlytra with four entire sti'ia-; fifth short, apical; sului'a! 

 extending in front of middle. Front tibia' willi four teeth, the apical one 

 slightly bifid. Length 5 nnn. 



A well iriarked species descrilied tTom Kansas and represented 

 in the eolleetion by a siniile speeiinen taken in Vigo ronnty. June 7, 

 froni heiioath the cai-cass ol" a dead hen. 



1161 (3511). HiSTEK POLLUTUS Lec, Col. of Kansas, 1859, 7. 

 Resembles miMhis, but differs by being less broad and by having tlie 



fourth dorsal short. I)asal only, or with ;i few disconnected punctures at 

 apex. Kpiplcura willi three stria'. .Vpical tooth of front tibitTG larger. 

 Length T, nnn. 



T ak-c and ( 'rawfoi'd comities: I'are. May l:-!-May 25. 



Group D. 



To this ji'i-oup belongs a single small species, separated from its 

 allies by the charaeters mentioned in key. 



1162 (M.502). HiSTER SERVUS Erichs.. Jahrbuch, 1834. 147. 

 Oval, convex. Thorax with two marginal striai, the outer usually entire, 



simietimes abbreviated to one-half or three-fourths. Elytra with four entire 

 stria\ fifth short, apical; sutural half the length of elytra; subhumeral en- 

 tirely absent. Pygidium convex, coarsely and rather densely, propygidium 

 more densely and more coarsely, punctured. Front tibijie with three teeth, 

 the apical one deeply bifid. Tvength 8.5-4.5 mm. 



Vigo ('o\inty; scarce. ]\Iay 2(VJune 11. H. defedus Lec, is 

 probably a synonym of s( rrus, as the two are separated on the length 

 of the thoracic stria, which varies exceedingly in the specimens of 

 s(rni.<i before me. 



Sri!(;ENUs IT. (Phelister.) 



N'ery small, oval species, having 1lie inner thoracic stria absent. 

 ,lie outer someliiiies |)fesen1 and then vi'i'y close to margin; proster- 

 niim with a stria on e'lcli si(je: mesostei-iuini |)i-oiiii!ieiit in front. 01 

 llie six s|)ecies known ffom 1 he t'nitecl Slates, two ocenr in Indiana. 



