'PI IK DKATll-WATCTI AND DKHO STOKK BKKTIiKS. 873 



loii.i,' as wido. sides parallel, limadly siimale at middle; liiiid aii.ules nearly 

 roctansiular. sliarply deliiieil ; disk evenly convex, with an iniiirossed line :it 

 middle and a transverse impression each side on basal third. Elytra with 

 rej,'nlar rows <il' cl.ise set. rather deep, .piadrale pnnetures; intervals sli.i,'htly 

 convex, nut mnch wider than the punctnres. Length 5-0.2 mm. 



Starke, Putnam, Vigo and l.awrcnco counties; scarce. June 

 12-October 12. Occurs beneath l-.;ifk and on old liranclies of wild 

 cherry and oak. 



Tril)e IV. XYIJOTININI. 



Usually elonii'ate-oval siiecies havinii' the contrnctih' power fairly 

 well develojicd : thorax excavated beneath for the head, wdiich is 

 stron<i'ly bent under in repose, and more or less impressed or exca- 

 vated on the under side, the antenn?e curving into the cavities and 

 resting against the front coxiB. The antenme are ll-jointed and 

 variable in form. Two of the six genera comprising the tribe are 

 represejited in Indiana, while another may occur. 



KEY TO INDIANA GENERA OF XYLETININI. 



(/. Elytra striate; head merely broadly impressed beneath in front, not dis- 

 tinctly excavated for the reception of the antenn;i.\ the latter strongly 

 serrate, the three outer joints not elongate ; metasterniun not sloping 

 downward in front. X. Xyletinus. 



ua. Elytra not striate ; head deeply excavated beneath for the autennne. 

 1). AntemifE serrate, the outer joints not elongate ; metasternum strongly 

 sloping downward in front. XI. Lasioderma. 



hh. Antennsie not serrate, joints D-ll elongate; metasternum more grad- 

 ually slojiiiig dnwnw.-ird. Megorama. 



.\. XvM'rriNis Lai. 1S2!). (({r., "wood i destroy.") 



Oval to oI)]oiil; species, ha\it!g Ihe thorax wich'f than h)ng, the 

 liind angles broadly rounded auvl iiiiderined, the front angles nearl>' 

 rectangular and scarcely roinided ; elytra, striate, the outer and 

 inner stria^ uniting on apical third ; ventral segments nearly etpial, 

 the first, second and fiftb somewhat longer than the third and 

 fourth. Thre(^ of the nine known species have been taken in In- 

 diana. 



KEY TO INDIANA SrK( IKS OF XYI.E IINIS. 



II. \'\\v\\\ (vliiidrical : eyes, especially those of male, larger and more con- 

 vex: width lit front about twice as wide as that of eye when viewed 

 from the front : co](.r brown or reddish-brown. 

 I). Last joint of maxillary palpus elongate, feebly triangular; thorax 

 moi'o jiarallel. the side margins very narrow and not at all refloxed. 



1060, PELTATUS. 



