Till': I'I.EASIN'G FliNOlTS I'.KKTLIIS. 541 



Xcjii'ly l.SOd species of I'lrol ylida' iWi' known, niosl df which ;ifc 

 exotic iiiid 1 r'opicjil. ()iily ;ihoiit ")() species, (list rihiiled ;iin(iii'.i' two 

 trihes. iire listed from North .\iiiei-ic;i. ()!' these ■_?•_♦. helon.uiim' to 

 .seven ^'eiiei"!. li;i\(^ heen taken in Indiana. 



Ki:V TO liaiiKS OF NOUTII .\Mi:i{I(A\ KHOTVMD.'T;. 



(/. I'"r(iiit ci.xal cavilies n|ieii lieliiiul ; ejiiiiiera el' nielatimrax not (listinot ; 

 reriii very elcii^^ate. siihcx liiidi-ical. I lie sides jiaraUel; antennal chil) 

 irradnally rernied, ."•- or f.-Joinled. Trilie 1. L.vngurini, p. ."(41. 



'/'/. l'"r()iit cnxal cavities entire: epiiiiera i<\' metal Imrax sei)aratetl freiu tiie 

 I'liisterna li.v a distinct siiiure: leriii niore robust, usnaliy oval; an- 

 teiniti! ciiili .",- ()!• t-Jeinled. iimre ahiaiptly lernied. 



Trii)e II. ICuoTvi.iNr. p. r>4:!. 



Trilu' 1. I..V.\(ilKI.\I. 

 'I'his ti'ihe is i-epi cseiited in North Auiei-iea l)\' the sinyie genus: 



T. Langckta Latr. 1S02. ( L.. ' ' a kind of li/ard. ") 



Long, narrow insects, soniewliat rosemhling certain click ])eetles 

 (Elaterida") in form, and of shining l)laok and red color's. Tliey 

 occur upon the leaves and stems of |)laiits. especially Mcsadenia, 

 Lacfuca and other genera of Composita'. and upon the flowers of 

 rmbellifertp. Several of the species hil)ernate as imagoes and in 

 early spring are to be fonnd IxMieath logs and stones. Fifteen are 

 known fi-om the tJnited Slates; of Ihi'se six liave been taken in In- 

 diana, while two others may occur. 



KKY TO IiM)I.\NA S1'KCU<;8 OF LAN(;IU{1A. 



a. Ahdonien in jxreat part red. 

 h. Head rod. 



c. Aniennal cliiti distinctly Ci-Jdinted : under side red. the last venti'al 

 segment Mack: thorax red. usually with a lilack discoidal si)ot. 



10:>1. lilCOLOU. 



cc. Antennal club .">-.joiided : last three ventral se.iiiiienis lilack. 



d. Thorax red, shinirii;, without spot. to."!:;, .mozaudi. 



(Id. Thorax alutaceous, or with a .creasy as[iect. its disk with a larf?e 

 elongate black blotch. uiscouika. 



III). Head either entirely oi' in creat jiart black. 

 c. .\ntonna' wholl.v black. 



/'. Metastennini bine: epipleiu'a and sides of elytra al middle red. 



10."..'!. A\(;rsTA lA. 

 //'. Metaslernuiii vi'i\ : knees. t;irsi ;ind lips of libi.-e bl.-ick. 



var. iinKKii. 

 cc. .\idenn:c in pai-l reddisleyi'llow : elylra will: a broad median red- 

 dish crossbar. 10.".!. ri;ii AS( I A 1 A. 

 '/(/. .\bdomen (Mitirelv black. 



