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Sarcophaga utilis Ald.......... Ciimenh sae tee SPahea eS ae APNG, 117 
Sarcophaga falculata Pand........+.eceececccercccecerrcresses Ay 117 
Fannia canicularig Linn............2ec-eseees HES SAO ET ade 118 
Spiders as enemies of May-beetleS.........ececceecccccctececcreeaces 118 
Diseases of the larva:— 
A nematode disease ..........-..- ia arate Satin vegeta vel ni sige lavajats:=.0n) sin cekel aoe 118 
AOprotOZOAaNAiSCASClyafava/ohis << :tserararelo/eie eoloisinie leruicjson'ciateleis'c wpibieinsa sie alajstetela 120 
BACHCTIAIIGISCASES tetas tte el eteieisishetelerolals (nis \nleve la alels.scainielei< init slwiatsTe\qin seen l ala 121 
MUN EOUIS AOISCASES ic wjsiatetars mimpaleve nie wintelaiareloinisralosoieieteinle“oxs/s'=/n\yloisiy sie iese wieaaD 122 
Pitcher-plants and Phyllophaga................- eee acpiere sb esia rate oe uate 124 
Miscellaneous predaceous enemies:— 
BRS eye iccee ech eaters wise tele iste elovanevefer tie ieveie c elmie wa summer ie laieleinle sie etal sincere 124 
Wild’ imammals and “amipbibians iss. cjccc ccc clsiee sive cles wee bse e nels 127 
DOMESTIC ADMINS Woes tiersteraieiohetevtaretos ehecee Sie Te aieialers isto sisisiote aja ve lols /ovw)s' ete isisan 129 
Hiterature: Cited! <5:-\:.c stevie oislare eleleielsieirtaie eiecseeinspinteie e reiciarsielatorasele epexereheteteke 133 
ARTICLE VI. SOME RECENT CHANGES IN ILLINOIS RIVER BIOL- 
OGY. BY STEPHEN A. FORBES AND ROBERT EARLE RICH- 
AR D SON CAPRI ALON Meine petetteveredatstensicle ancters, elate ¥en !elelasalietarat ste. tole elelstavets 139-156 
The principal causes of change............... SUES * MP GMMET yard Ae 139 
THE PLING pal CHAM SSecrey-taeieiatols te varsre: ©] oblate wtece ote’ -teis ole, Phe kavey al din ei scauy ap mumiaelin 139 
Bfects) On w the: MSHETIOS ME yeheveret slake elie areysscl elickers\ « foye) alls 'a/eipY one mcai’asalm in/a/la abomcaliere 148 
Investigation Weed ed yt iesreive atcceieteie wtejars ee eialndelel oie) -lniarsl sia ia tel eleln sie)lais/ 155 
ARTICLE VII. THE PENTATOMOIDEA OF ILLINOIS, WITH KEYS 
TO THE NEARCTIC GENERA. BY CHARLES ARTHUR HART. 
(ESP LATE S)) WONG VOLO Ps ech cattoshstelleistetars’aicie elosaiets: alate rasta iat Vet ici atcha arene 157-223 
Introductory, ......---++++--eseeeeeee bulbatehobni ols fo axokare aepveda Sitv ane & hecets istanaiaie 157 
WhSCellAaNeOUSH NOLES wie cis sintelalaeeteianais! oie ci eaters opts eave olayeihiel si eieraiwteretetacalietats 158 
CLASSIC atom scree eeevaletatere aia oisial oy teva lainey eine clase aiplataniniaret> sere ona teherenetalmtetate 159 
Imagines:— 
Caecalvanpendapess nieces viele ietacierstersta = qeimin eels cape ae bush iste Grebe cna 159 
NAb RG Ow IAs Sancis ao canine Choc OnOoneOncr capa ce cen de dlc 161 
ING VATU LS fesse ct tener arated spol eosha ys aabein yn cuatelg hevazs te ole ter el ates ae verabel cyeie ieneinyaret aeagedd 163 
Superfamily Pentatomoidea .......... Sadan ee tater eats Ras ceee | onstatle te tal clever ala ere 164 
Kieyiito famines aenieie arate cists tries eteyol alot axaraiel stags eusset sieve ie serous eh= lei aasimunii mala 165 
igbpeahl hig 2teyalrzinoyeablol-Key Mae A ne Aon Hainan fe auaenan Aeron Gores 5 165 
Key: to subfamilies) isis eve soresjajerctele > elelacisielsi vis «1s wleare a (opmls nin sly/=) alle gig 165 
Subfamily Scutellerinae ........... cece cece eee eter teen tte eeeee 167 
CV TOM EELOCS uavaleaiare alae eistitateernce ave lelsieleta nts piesa aitde late oft at ovale mio ees 167 
TPribecOUOutOcaLSiMavaeisieisls cic cicislstaveletatels\ aialctore ial>ialctera\alnieleipiolaleiaiainiee 167 
Key, to iseMerae. tears sai seeiel= sia Sudha sae BA a Oa eat 167 
Tribe Deuy GIN, vee raate were soevals elstarcters yar Wiein ik atoud'e BisinNehets se a ianannielexe 168 
Key to) 2 enera yaa ee vies ators ielelalalote avwicvetelsvehentetal ate Soy atone MERI Y mi 168 
Subfamily Graphosomatinae .......-.-..eeeeee cece e eres Ste trates 171 
Key. *h0 POTION A sicis ataicherh ial'syeveieteieie casi eials elaite 'sltee ieliehe evel arpters ibeele bel e/ oles js 171 
