THE LAJrELLlCitKX BEETLES. 937 



1768 (5501). BoLEocERAs iI\.z.\Rrs Ollv.. But Hist. Nat. des Ins., 1, 17S9, 63. 

 Broacllj- oval, robust, convex. Uuiform chestnut-brown, shining ; mar- 

 gins of bead, thorax and legs fringed with long brownish-yellow hairs. 

 Males with a flattened, slightly recurved, truncate or euiarginate horn on 

 clj-peus and a transverse ridge on vertex ; females with elypeal horn re- 

 duced to a ridge and vertical ridge higlier than in male. Thorax of male 

 with a transverse ridge and a prominent tubercle each side on apical half ; 

 these reduced in female to a blunt crest ; median lengthwise groove wide 

 and deep behind the crest, with one or two coarsely punctured, obliquely 

 transverse grooves eacli side. Elytra with five coarsely punctured strise be- 

 tween the suture and humeral ridge and four or five additional ones on the 

 side. Length 6-12 mm. 



Throughout the State ; scarce. .May 19-.Ju]y 1. Two of the five 

 specimens iu the collection were taken at electric light; the others 

 beneath rubbish 



XIII. BoLBOGEROPOMA Schffiffer. 1906. (Gr., "bull + horm- 

 body.") 



In this genus ihe eyes are completely divided and the middle 

 eoxaa are very narrowly separated, with a tooth-like elevation aris- 

 ing from a proce.ss betv\een them. One .^peeies is known from the 

 United States. 



ITOri (5590). BoLBOCEROSOMA FARCTt'M Fab., Siie(;. Insect., I, 1781, 14. 



Broadly ova], 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. JIales 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; females 

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

 pit each side of apical half; lietween these a ridge with an acute tooth at 

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

 the front half bearing only an elevated ridge. Elj^tra with five or seven 

 coarsely punctured stria' between the suture and humerals. Length S- 

 12 mm. 



Throughout tlie State; scarce. -June 6-June !•'). Occurs be- 

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

 ways in woods. The black area nf the upper siuM'ace varies greatly 

 in size. A female frOm Lawrence ( 'ouuty has three black spots on 

 apical half oh' thora.x, tme median and a smaller one each side, and 

 the pale portinn of el>'tra limited tu a small rounded spot on basal 

 third. The specimens with seven stride between the suture and 

 humeral prominence ai-e usually listed as var. tumcfachts Beauv. 

 All but one of the Indiana sjiecimens are of this form. 



