204 



with \vv\ l)i'(t:i(l willies, clcai- yellowish i;r('(Mi tlir()Ut;iu)ut . Chit tciKlcii 

 says that their iaxorite food is the hop plant. The (»fi;,Sis desci'ihed by 

 US in the Twenty- first Kcport (p. S4) as pcM-Juips those of this sjiecies 

 have since been detenniiuMl by tlu^ V. S. Division of Mntoniolojiv to 

 bc'loiifi' to Ccrcsa hiiiriiKi. The species is only locall\' coninioii, but is 

 known to occui- from Texas to b)\\a and ( )hio and in \'ii'i;inia. 



Tin-: id;.\i' iiori'MUs. 



I)< I phiicilKr, Jdssidd . 



The important corn leal-hoppers ha\-e aln^ady been treated on pages 

 121 12I-). l''i\'e others, which follow, haxc been taken on corn. 



DU'IlANO'rKOIMS sp. 



I*]\anipl(>s of this delphacid ha\(> twice been noticed on corn in southern 

 Illinois, in one case apparently feediiii;-. 



LinUHNIA Ol^XATA Stal. 



Occasional s])ecimens have been taken by us on corn, in one case 

 in th(> act of feedins;-. This insect was erroneously determined for us 



as Stohcni trianiyyild, and 

 the record concerniuii,' corn 

 und(M" that name in the 

 Twenty-first Report (pajie 

 ()7). should be transferred. 

 Tlu> sp(H'ies ran<>,es from the 

 Mississippi to the Atlantic 

 and is frecpieidly taken in 

 Illinois. It api)arently hiber- 

 nat(^s as an adult and has 

 two broods a yc^ar. It oc- 

 curs on <i;rasses, <^-rains, and 

 weeds. The adult (Fi,<>-. 212) 

 is slender, about an eighth of an inch lon,u\ oi'an,ii-e-bi'owti trimly 

 mai'keil with white and black, the wiuus clouded with blackish. 



Flc. 212. Lihiirnin ornatii; nUo iiead ami llidiax 

 seen from al)(ive. lOiilartied a.s iiulicated. 



( )\('()Mi';r()iMA I'NDA'rA l''a.bi-. 



This kirge leaf-hopper (Fiy;. 21o) is full half an inch ^I^V 



in lenfjth, with jmrplisli winii's. the head and scutellum 

 orange reticulat(> w ith black. It s(H'ms to be (>si)(>cially 

 a grape insect, but has been takiMi on coi-ii. ])room-coi-n, „ „ ^ 



" 1 I'lo. 213. Onco- 



and other i)lants. It is discussed as a suuar-beet insc>ct mctopia undnto. 



' . . ' _ Natural size. 



in the Twenty-first K(>poi-t of this ollice (page 70). 



