THE LAMKLL1CORN I5KETLES. 937 



17C.S (5501). BuLisocERAS LA/Aiirs Oliv., Ent. Hist. Nat. des Ins.. 1. ITS'.), 03. 

 I'.roadly oval, robust. convex. Uniform chestnut-brown, shining; mar- 

 gins (if head, thorax and legs fringed with long brownish-yellow hairs. 

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

 clypous and a transverse ridge <m vertex; females with clypeal horn re- 

 duced to a ridge and vertical ridge higher 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 each side. Elytra with five coarsely punctured stria' be- 

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

 side. Length 0-12 inm. 



Throughout the State; scarce. May ID-July 1. Two of the five 

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

 beneath ruhhish 



XIII. BoLBOCEROSOMA Schteff'er. l!MHi. (Or., "hull I horn + 



body.") 



In this genus the eyes are completely divided and the middle 

 coxa 1 are very narrowly separated, with a tooth-like elevation aris- 

 ing from a process between them. One species is known from the 

 United Stales. 



1769 (5590). BOLBOCEROSOMA KAUc'iTM Fab.. Spec. Insect., I. 17S1, 14. 



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

 row basal line (and sometimes a d'iscal spot) on thorax, sutural and mar- 

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

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

 with a short, acute horn arising from the middle of the elypeus; females 

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

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

 each end and a similar tontli outside each pit ; in female the pits are absent. 

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

 coarsely punctured strife between the suture and numerals. Length S- 

 12 nirn. 



Throughout the State; scarce. June ('.-June 15. Occurs be- 

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

 ways in woods. The black area of the upper surface varies greatly 

 in size. A female from Lawrence County has three black spots on 

 apical 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* between the suture and 

 humeral prominence are usually listed as var. hum fad its IJeauv. 

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



