Tin: ((lAlll-Cl.AW i;i) |;.\KK HKKTIiKS. \'J.I\ 



111 addition to the <i))ove.-iii(>nti()ned characters, the iiicnilicrs of 

 the raiiiily have the inaxilhiry palpi 4-.ioin1e(l and orteii Iowj: an 1 

 iMU<-li dilated; liead su(hlenl\ l)iit iiindcralely narrowed l)ehind lln^ 

 (■yes, which are usually lar^c. 1rans\-ei-se iind einar^inate ; elypeiis 

 not distinct, labrnni proiniiiciil. mandibles short; antenna' loni;', 

 more or less sei'rate. 1 1 -jointccl. tin' joints, except three or fniir of 

 the basal oiu^s, studded with lar^e circular, sparsely ])laced pits or 

 |)ores: thorax with the side mariiins o'vions; niesosternuni short, 

 the side pieces reacliin^' the coxal cax'ities; nietasternum Ioiil:"; i'l\tra 

 rounded at tips; abdomen with live or six ventral seuiiients, the 

 third and fourth of wliicli are prolonijed backwards and with their 

 hijul mariiins leitli(M'-lik'e ; nnddle coxa- with distinct trochaiitins; 

 hind coxa' transverse, not widely separated, the interco.xal process 

 in the Indiana yeinera Ix'inu narrow, acute and antrnlate; tai'si often 

 IoIxmI ben(>ath, the front and middle ones live-jointed, the hind ones 

 4- jointed. 



The name of the family is dci-ived fi-(,m that of tlu^ typi<-al LTeiius 

 Cistela, which is a diminutive of the (li'cek /,/'.s7r , a "little box or 

 ehest," and probably refers to the form of the insiu'ts. The larva', 

 as far as known, somewliat resembb' wire-worms in shape, live in 

 rotten wood and have no speei.d economic importance. 



The ])rincipal literature treating;' of the North American forms 

 is as follows : 



LeConte. — "Syno])tic table of the ^■eiiiis Ilymenorus, " in New 

 Sp. N. Am. Col., I, 1866, 135. 



LeConie. — "Synoptic ta])l(> of species of IMyeetoehai'es. " ht 

 Proe. Amer. Phil. Soc, XVIT, 1878, 616-617. 



Cfj.scf/.—" Synopsis of the Cistelida^ of the V. S.," in Ann. N. Y. 

 Aead. Sci., VI, 1891, 69-170. 



Casey in his Syno])sis reeoisnizes 14 ^-enera as belontiiuii- to tlu' 

 family. Of these representatives of seven have been taken in In- 

 diana, while those of another ])ei-lia))s occur. 



KEY TO IMJIANA GENKKA OF CISTELIIhE. 



(/. 'I'arsi lulled lieiieatii. 



b. Head in i-epose rest in. ir a, mi i list tlie piMsteriium and cu.\;i', tlie fci'iiier 



stronjil.v slaiitin.^ downward in front of the cox;e. I. Ai.lkci l.\. 



hb. Head in repose free, tlie i)r(isternuni lonirer and less slantiiis; in front 



(if c(ix;e; Iliui-.ix iniinded at ajiex. its hind .leixles rectani^nlar : body 



(ilildiii: and par.illcl. 11. lIVMKNoms. 



itii. Tarsi nut inlicd licneatii. 



c. Last .i'liiil "if iiiaxillar.v p,il|ii eion.Lratc. triangular; niandililes dis- 



tini-tl.v notcjied at apex, tiieir tips acute and siiiH'(|ual ; antenna' 

 more (»r less compressed and serrate. III. Cistkla. 



