THE FiuK-('(>i,()Ki:n iM';i'','i'i.i:s. l.'UT 



loii^', comb-like processes in llic iiuilc 'I'lic ii;iinc is I'riiin tl\;it ot" 

 liic typical g'eims Pijrorlirdn. niciiniim- "lii-e coldr," ;iii(l \\;is prol)- 

 ably sng'i>;ested l)y the ])res('iicc .if \-ih\ or yellow in tlicir cdldi'iition. 

 some of the foreiiiii ones t)ein<i' jilmost wholly icd. ()iir species live 

 in all stages under the luilf deejiyed ImrU ot' trees atid luive little 

 economic importance. 



In addition to the moi'e proniiiieiil eliarjietei-s mentioned, the 

 Pyrochi'oida' have \ho eyes euiai-uin;de. cntlier eo.-ii'sely ^r;iiiula1e 

 and som(»times very lai'ii'c; antenna' ll-.jointed. insei-ted at the sides 

 ol' the f'l'ont just hefor(> the eyes; elytra wider than the ahdomen. 

 ronndecl at ti]^s. the e|)i|)lenra' \isihle only near the base; abdomen 

 with tive free ventral s(»<i-ments, the fii'th emarginate. exposing' the 

 tip of sixth in male; fi-ont coxa^ larii-e, conical, conti<i'nons, the cavi- 

 ties widely open behind; middle coxa- with distinct trochantins; 

 tarsi with next to last joint dilated, claws sim])le. 



The ]))'incipal papers treating ol' the North American species 

 ai'e as follows : 



LcConte. — "Synopsis of the Pyrochroides of the United States," 

 ui Proc. Phil. Acad. Nat. Sci., VII, 1855, 274-275. 



Horn. — "Synopsis of Dcndroides," in Trans. Amer. Ent. Soc, 

 XV, 1888, 46-48. 



The 11 known species from North America are divided among 

 four genera, all of which are represented in Indiana. 



KEY TO GENERA OF PYROCIIROID.i:. 



a. Eyes moderate in size, well separated. 



/(. Antemiie simple; eelor dull yellow; thorax and elytra stn)n,t,'ly •••■n'i- 

 nate. 1- Isch.vma. 



hh. AntenniP serrate or l)ranehed ; I lie hi-anclies more or less ri.t^id. 



<: Last joint of maxillary ]ial|ii loiii,'. iinniiiiL'-knit'e shaped; leniith 

 13 or more mm. II. Pyrocuhoa. 



cc. Last joint of maxillary palpi lon.u'. oval; sniallei-. not over S nnn. 



III. SCHIZOTIS. 



ati. Eyes vei'y large, sometimes nearly contiguous; branches of male an- 

 tenna; very slender and Hexible. IV. Dendkoides. 



I. TsciLMJ.v Pasc. (Gr., "dried up.") 



This genus is represented in the eastern United States by a 

 single small species which, on account of its peculiar sculpture, is 

 very diiiferent in appearance from any other Indiana beetle. The 

 body covering is much firmer than in other genera of the family 

 and the last joint of the maxillary j)ali)i is large and hatchet-shaped. 



