IIKMII'IKI; \ ELETEROPTERA LYG E1DJ :;7.~> 



In our own conntrv tin- number-, an- larin-iv in excess of thi-. lilt\ -<in- 



Species beill^- reco^-lli/.ed, .-hoWlll^ this falllilv to ll.'lVe been OD6 "t' tile 111'H'e 



important amoiii;- Tertiarv I leteroptera. The disposition "I tlie-e in their 



respective Sill llaillilies has lieen eti'erteil only by their eviilellt allillities ill 



ral -tructure with existing members of these subfamilies, n<it bv a 



demonstration of those definite characters (mostly relating to the position 



of the .-liirmata) upon which thc-e subfamilies were founded, a- that would 

 lie impossible. The result .-lions no small resemblance to the character 

 istics of the European Tertiarv fauna, the prevailing tvpe beini: the .V 



dochlna and the next the L\ u'.-eina, but bevoml this the resemblance fail- 

 to exteinl LiTeatU', the prevailing faiiiih' having nearlv T.'J percent of tip- 

 whole, while in Kurope tliev claim scarce! v more than ~>* ' percent: am! 

 a^ain the I .VL'a-iua ha\ 1 638 than Hi per cent of the whole, while in Kurope 

 thev liave about .'I.') per cent; further, none of the other subfamilies which 

 appear in Kurope are found at all in America, our other ^r-iup- bein- i . 

 corina, < )\\'carenina, and 1 'vrrliocorina, whicli tind no place in Kurope. 

 lint perhaps the most remarkable re-ult of the investigation of the Ameri- 

 can form- i- the lar^e number of new generic tvpes found to be necessary 

 in ihe Mvodochina. where, out of the twenty-one genera only four with 

 but the species to^r.-tlu-i-) are re^anled as identical with e\i-tin^t\ 

 In the ()M World a single species found at Oeningen lias lieen considered 

 the type of an extinct genus, Cephalocoris, not found with u-: but undoubt- 

 edly, to jiidu'e from tin' illustrations and descriptions, a more -archill;,'- 

 examination would briiiLT out a ditVen-nt Condition of thini:- !'' -!'!.- thi-, 



llei-r ha- established a magazine genus, Kv^a-ito, for all the memliei 



the t'amily for which he could lind noplace; it evidently compri- 

 di\ ei'-e forms. 



Subfamily I ,Y< .. I .1 N \ St&l. 



This trroup of I^v^.-cida- hold- tin- -ecoml rank amoii'_ r the to.--il- both 

 in Kurope mid America, but its relative an.l ab-olute importance i- -reat'-r 

 in the < )ld W.irld than in th- N'ew. In I'jirope a consid.-rable niiinln' 

 -pei-ii--., ten or rlcveii. are referred to l.vii'a-us. nut including tho-e which 

 plainlv do not belon-j- h.-re, bill it is pmbalile that mdv one of the -p. 



of Heer'.- ina^a/.ine ^ellllS K\;j.i ile- belong- here, lilo-t ot till- other- 1- 



more probahlv .M yoilochina ; to thi- we mav perhaps a'ld hi- extinct ji-nu- 



t 'ephaloi-ori-. All of these seem to belong to the dhi-ion of |,\ "-a-ari.i. 



