CONTENTS. 
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ore word meaetmee ssiecemectemae cits cise ccsciiviss ss cnGesscsciuce-ducisaccetiecsctecessdeecccas © 182 
MTD CLEO)T 16 Sob so doce COUR GEE UDB OD UE OeS MARCO RE See tae Se IS nee aaa eee ee 185 
General description of the ponds and their environment....................00e cece eee eeeeeees 186 
Aino anes oldraroniiies and: CamselMies,.«.c.6)<.210%,s.c1c= aiciois ow sig neb-tid nye wisi w owisicieisels vdeeee coeds 188 
Relative abpndance Of different’ SPECIES <5.<./0/0.-.chs.cie sis e's «1s eyes clave Sod eveisle Guverdaie swears neve 189 
ett cuinis tonya Ol atu ON Alen. ie eee tt cis dn ace areca orci ctetne icp ernie cin, Leaps Seats watt giac Ss s.eeivmeleceres 192 
Moree atts OOOO Ate TV INPNSa te mctte eaN Acie t oi eroninaimee rahe: Seba s paeetide ns wae aeons 193 
Marth patts ohodonate tnavOsse toils ond Sick aciar eaten) cise nis wb bid Measles Nes wks Farah eles ods 199 
Heonomic relations between odonatesiand’ fishes. -- - 2.2.5. -2-2ecece- ns scene cede sewsn- ences 200 
Hane GiOdOnAL EMMY IN PHShen eae crate Sens = hn oh oa sae anis be aie ees se colon ection, Siem aece 201 
PES TUG TALES CONIC OER ALE ALY AIMED INS whet Mees cVe yoo hsp cua) ctaccrs ocayal> ane bis oye sintcbercnete whose ois sfeie esarep ciate acess, zusroraie art 209 
Hane lof adoriate tiMAagOs: octets cpa) she 2 ois <pare ei sieie esmerervioie.s ici sistei Noes bioletniais ereice se cle clsleaimane caisem saree 211 
Enemies of odonate Imagos........2.:2..0.80e ese ees een eee ULO Aa OS ea em nee es 222 
Qiberie TIES NGO E ca dasooosodeb ee mt bEnUOr Ae uacn Don eUCRE COMSHO SE a mas nerae ane 225 
Oionare dma vosas wis OOdey sect seme ai eels Gs ale on cele ocinaeic hes Eweelneecec Geweeeouseetes 231 
SUBEAE UNO TEAR ereG heer amis dh oare da UAbS 6 OSS a tO DAMGOD TORIC Eo ep Aa ate Oc Re ere a eee ae 232 
Pxpeniments im HatchinrOdOnate eggs), .icicis's) «10 x ele es 'sicje eels sere einaiejaiaieierocieinainie ws apie see ca 238 
General tconCuislons arts yee ree yec se citer sre relevent hoe rolak ele cle ee aioe PORE Aaa SE oars rasan 246 
Annotated list of dragonflies and damselflies obtained near Fairport, Iowa....................-- 248 
TEM MS oa jo) 7 i Ee Goa ae DoE ROSE b act Abo SOOO TC 50.0050 OOS SoA ne OAC AE COCR EO CSrOncE menace inc 260 
Tera eaeehevar tate e exerete too rer oa ope are oats at yevafolenk tobi 0! ej rove cr alo Wid eyer<tcicta,diatneneieiels/stoja Ge eialeis 5 oleate sia wipfeiatene I 
