ix 
ARTICLE X. THE EUROPEAN CORN-BORER AND SOME SIMILAR 
NATIVE INSECTS. BY WESLEY P. FLINT AND JOHN R. page 
MALLOCH. (40 Figures, INCLUDING 2 PLATES) JUNE, 1920 287-305 
Discovery of. the corn-borer and area infested................e.e000- 287 
PINS PUN LEAS ev ven sick cd aya) 6s 9) chs) ou estal oie xan ov oush shel es aia; ms aioe Riaie labatalacel adie oi tel Siapetenals a Vataveteiets 288 
iS LG Vamta eta cute niet ats a Peterscath/ara, scaleisi ahaha lal nine ataie sYate.¢ (os bval abate ares ereisnluieia 288 
IMIGANSVOL -SONCAG ts crieie cise clelere, eferersieiaie) suallsisisvnle cle sveieVala elele » dials vee wivyeicieleiers 290 
WSCC OE OO TO Le GRR eke GE OMIEtIO OCD COC COCO DE CIOAD OO COMO ET one Tet 291 
Native borers closely resembling the European corn-borer............ 291 
Other insects likely to be mistaken for the European corn-borer...... 294 
Distinguishing characters of the corn-borer group (Pyrausta nubilalis, 
PAUP ILAUIS ANC” Ee. VOUULNLONGLAUULS)  ele\ars 2 soe c’= theists c lciz/ciere se aisle ofese ele’ 297 
The European corn-borer (Pyrausta nubilalis Hiib.)................-- 298 
The Nelumbo-borer (Pyrausta penitalis Grote).........-c cece eee eee 302 
The Smartweed-borer (Pyrausta obuwmbratilis, Led.)........ her EAE Wear 303 
PUMCUSUG CONT EVE, (SDiiMcctanictcise cls cclea tcc es eraiclewie cee s Fateveterwislel aver eve etere 304 
ARTICLE XI. A STUDY OF THE MALARIAL MOSQUITOES OF 
SOUTHERN ILLINOIS. I. OPERATIONS OF 1918 AND 1919. BY 
STEWART C. CHANDLER. (3 Maps, 9 Puates) JuLy, 1920........ 307-328 
Introduction :— 
The relation of mosquitoes to malaria..................0 cece eee 307 
Melanin gins SOMtH Ors LIM OTS shel cha cis aiersiaituers sie.b aie cus’ o: oiaravereleselh:a cie.eicle sere 307 
OMIECHROMsUNOmSULVEVierateristeiec\ercisicieteieie els. ole w'sicc cre sett cies ielaioase- als owturdua 308 
PLCS CODY metas inet ne ctstetsretais aietdieveile ss io ele, Serslere cie'c (G0 furaveqelsle%e'cta ele ieleis te 308 
Survey work at Carbondale: — 
HreqNencyaOr Widlavial (GISCASC... 2's. c15.0.0 «aie ciche)© ols avis cs cle nce e siete are 309 
Maine MEHe : LELTICOLY.<:ciecie cis aie c's cvs soc ol cpeis ie clsidicre.s Sheld bias cou e eelewee 309 
HWxaminations and) COUCCTIONS. «cic... +. «cre cinco eleseniaa ss cusses ew civielcte 310 
HSHOCULIE PLACE etare talents revevetereteenicie revels atarntei sieve as)es10.(o val tials s\fakale wvereiele: vel avers 310 
Prevalence of mosquitoes and abundance of malaria.............. 318 
MEP CLON MME Re ce ieaie Siete eines Micieraie alwless avuctatelend gssis a-biv'e #(a ab "gatere acahs dwtaw intend 318 
Relative abundance of malarial mosquitoes, 1919................ 321 
SPP RE CLUS EUS a UTM IV EEE ELIS FOTO. ga)'arcisifae7e ale ve,se ssn 6 cain io a aces) opalaye dle ee e:eietere 322 
ERA SM UE -ACES wear teralcta evavarciete ctl edclicley eke cuetiste veh wi-stdia che. sha lovevaisaietethvete, slalarslans 322 
purvey workin Anna and JONeSDOLO. 26... cc cs cls mew acnciss slaaecacuts 324 
SNE COMIE “WAGON ie retela ncbierrie eit oie ioisye reise eia ain, wi visieielers «el gielatete elevsl.c! eurnevelelavtve 324 
Survey work at Scott Field, Belleville............ ccc cece eee eee eae 325, 
SCOUMMIMN Se WOK Its OLNET DIACES | i. oie sa laro0ia:0.s 010100 0 iolu oib/ov0 etoleelulene!alelels\eteis'e 325 
GONEVOTSIMICASTITOS Weretttetstevercceve crs ators \ahote lo’ ietalerai'e ave) se avele tere als lelete, 00s a\sielelejeustene 325 
Summary ......... Rua isyaloeiney dcacasece dtaiai sloravesalioraisiate’ eter stassheTaterenare tol erete aici enwlarers 327 
ARTICLE XII. NEW SPECIES AND VARIETIES OF PHYLLOPHAGA. 
BY JOHN J. DAVIS. (4 Text-ricures, 6 PLATES) AuGust, 1920....329-338 
PRODI Us DETLOMOM. LMSW is cre 'ciaicisle’> s\eielnicis c\e'= 01s 2/0 > sie7s rele) stele eelyis efoto 329 
Phyllophaga fraterna Harr., var. mississippiensis, N. Var....-.......6. 330 
