•'•'<> FAMI1,N- \XV.- IIIS-I'I'.KMI) i:. 



LcCuittc, John E.-'A Monogi-apli of the North Ameriean llis- 

 teroides." in Bost. Jourii. Xat. Tli.st.. V. 1845. 82-86, pis. 

 I-VI. 

 Horn. — "Synopsis ot tlic Ilislci-ida' of the Tnited States," in 



Proe. Amer. Phil. See.. XIIl. 1878. 27()-:563. 

 Casey. — "Descrii)tioiis of isolati'd (icii.'ra and Speeies of Ilis- 



leridie," m Ann. N. V. Acad. Sd.. VII. 1893, 533-578. 

 Nearly 2,000 speeies of tlie family ai-c kiK.wn, about 260 of which 

 are from North Ajnei-iea. Of these tiS. distributed amonu: 13 genera, 

 have been tjdx'en in Indiana. Tli!' Pai!iil.\- is first divided into three 

 tribes, and these in tnrn inio genera. 



KEY TO TRTBKS OF H ISTKKlD.i:. 



(I. IIe;i(l stri'lclied (tut forward i>v Ixnizdiil.-il ; ninudibles very proinineiit ; 



f(inii very nmcli depressed. 'I'rilie I. IIololeptini, p. GOO. 



'/(/. Head retracted, beat downward; iiiaiidil)les not very promiuent; form 



convex, usually rounded, oval or cylindrical. 



J). Prosternum distinctly lobed in fnmt (tbe lobe very short in Trihaliifi.) 



Tril)e II. IIisTKixr. p. COl. 

 hh. rrosternum not lobed in fnmt. Tribe III. Saprim. ]>. 017. 



Tribe I. IKILOLEPTINI. 

 This tribe contains in oni- fanna the sin,i;ie u'einis : 



I. IToLOLEPTA Payk. 1811. (({r.. "all • thin.") 



Medium-sized, oI)lon*;' or nearly sipiare, very ihit and thin beetles 

 which live usually ])eneath the close bark of freshly felled poplar, 

 tulip and elm trees. They have the labrnm deeply and broadly 

 grooved, its apex triangular and strongly bent downward; front 

 tibia^ dentate on the inner edge; anteiuial club without distinct 

 cavity for its lodgment, being mei-ely I'iM-eived in a slight depres- 

 sion on the under side of thorax. Two species are known from the 

 State. 



1141 (3400). IIoi.oLEPTA LTCiDA Lcc. P.ost. .Tdiu'n. Nat. Hist., V, 1845, ?.7. 

 pi. I, fi.c 2. 

 Snbqnadrale. dejiressed. 'IMiorax transversa', njxw' widely eniarginate, 

 base truncate, hind angles obtuse: disi< puiiclured at the sides, the margi- 

 nal stria entire; apical angles of male wilii a deep jtit. Elytra with first 

 dorsal stria entire; the seceiid \rvy sburl. basal: lliird a mere pnncture at 

 base; subhumeral deep, abbrevialed at bi>fli ends. I.eiiglh s mm. 



IMarion and Posey c(Hint ics ; scarce. March li» April L'l. Tak'cn 

 from hellcat h coltonwodd hai-k in hiw damp woods. 



