TiiK i,.\Mi'M.i( (>K\ i:i:i;ti.ks. 937 



1768 (5591). BoLBOCERAS lazakis Oliv.. Kiit. Hist. X;it. dcs Ins.. I. 1TS9, O;',. 

 Rrondly ovnl. robust, ooiivex. liiirtinii clu'sliiul-browii, shining; niar- 

 sjcins (if ht'iul. tiiorax and ic.u's frin^MMl with icn,:,^ brownish-yellow hairs. 

 Males with a tlatt(>ned, sli.iililiy rccurvi'd. Irtuicate (»r iMuarKinale horn on 

 clyinMis and a transverse rid.^e on vertex; females with clypeal horn re- 

 dnced to a ridjre and vertical ridjxi" hiirlier than in male. Thorax of male 

 wrtli a transverse ridge and a ])rominent tubercle each side on apical halt: 

 these reduced in female lo a blunt < rest ; median lengthwise groove wide 

 and deep behind the crest, with one or two coarsely punctured. (.l)li(iuel\ 

 transverse grooves each side. Klylra with live coarsely punctured strite be- 

 tween the suture and humeral ridge and four or tiv(> additidual ones on the 

 side. Length (5-12 mm. 



ThroiiH-hoiil the State; scarce. May 1!) .Inly 1. 'I'wo of the five 

 spcciiiK-ns ill the collection were taken at electric liii'lil ; the other.s 

 boneatli i-ul)])isli 



XITI. I^OLHOCKKOSOMA Sclia-ffer. l!)<)i). ('Jr., "luill i horn \ 



l)0(ly.") 



Ill this genus the eyes are completely divided and the middle 

 coxa? are very narrowly soi>arated, with a tooth-like elevation aris- 

 ing from a [iroeess hetv\een tluMii. One species is known from the 

 Tnited States. 



17(il) (5590). BoiJjocEROSOMA farctum Fab., Spec. Insect., I, ITSl. 14. 



Broadly oval, very robust, strongly convex. Reddish-yellow ; head, nar- 

 row basal line (and sometimes a discal spot) on thorax, sutural and mar- 

 ginal lines and apical third of elytra, black. Males with front edge of cly- 

 peus and angles in front of eyes, acute, elevated and slightly reflexed ; also 

 with a short, acute horn arising from the middle of the clypeus ; femalei^ 

 with the horn reduced to a transverse ridge. Thorax of male with a deep 

 [lit each side of apical half; between these a ridge with an acute tooth at 

 each end and a similar tonth outside each pit; in female the pits are absent, 

 the front half bearing only an elevated ridge. Elytra with live or seven 

 coarsely ptmctured stria> between the suture and Inunerals. I>ength 8- 

 11' mm. 



ThrouglnJiit the State; scarce. .Inne ('.-.Innc !.">. Occurs be- 

 neath logs, most freijuently in sandy localities; also along path- 

 ways in woods. Tlie black area of the u])i)er surface varies greatly 

 in size. A fem.ale from Lawr(>nce ('(umty has three black spots on 

 ai)ical half of thorax, one median and a smaller one each side, and 

 the pale portion of elytra limited to a small rounded spot on basal 

 third. The specimens with seven stria- lietween the sutun^ and 

 humeral prominence ai'c usually listed as var. fuincfacixs lieauv. 

 All but one of the Indiana si)ocimcns are oF this form. 



