CONTENTS CHAPTER I. CO I IUNLIAFLE . 11. AMAIOPHIL AN A D HER CATERPILLARS 111. THE G REA GO LDEND IGGER . IV. SEVERALLI TTLEW ASPS . V. CRAI RO VI. AN ISLANDS ETTLEMEN . T VII. THE BURROWER . S 1 111. THE TOOD-BORERS . IX. THE S PIDER-HUNTE . R S X. THE E NE IIE O S F THE GRAS HC PIF. R XI. VORKERS IN CLAY . XIT. SENSE OF DIRECTION XIII. INSI. ISCT AND INTELLIC EXCE PAGE I 5 56 7 2 . 97 19 . I 4 1 . 178 . 1gG 2 48 . 265 5 . 1 9 2 LIST OF ILLUSTRATIONS PA E PELOPEU O S N NESI-G , ROUP O F FINISHE C D EL LS A , ND TUBE OP ENED TO SHOW SPIDER S p age 266 F-onfispiece WASP EATIN . G 3 PAPER N EST WITH SIDE REMOVED TO SHOW CON STRUCTION OF COMBS . I I A IRIOPHIL U A R NARIA CA RRYING CATERPILLA T R O NEST I9 AMNOPHILA U RNAKI S A T INGING CATERPILLAR . 2 7 CATERPILLA W R IT H EGG O F AJIRIOPHILA U RNARIA 29 NEST OF AMMOPHILA . 3 AMMOPHIL U A R NAKI U A SI NG STONE T O POUND DOWN EARTH O VER NEST 39 THOROUG LO H C ALII S Y T UDY B Y SPHEX . 5 9 HASTYL OCALIT S Y T UDY R Y SPHEX . 61 S HE X I R .4 C IN GRASSHOPP T E O R HER NEST . G3 NEST OF SPHEX . 69 XYI ELUS ITAD I K N OIAII S . 7 5 NESI OF OXYREI. US 79 AP. IKUS I ISCI. L TUS . 8 I WASP IIOILIE I S N THE T, c G CARIN . 85 Nwr OF PEKENNIS . 89 NEST OF ANOKMIS . 91 LIST OF ILLUSTRATIONS PAGE SEXMACULAT IN U T S H E LINDEN R OOTS . 99 CRABRO A ND HER WHITE MOTHS . . 103 CRABRO S TIRPICOLA . . 106 BOTTLE O N STEM T O MEASURE WORK O F CKABRO . 107 NEST OF C. STIRPICOLA . . 113 AMMOPHILA SLEEPING IN THE GRASS AFTER J ANKS . . 115 NEST OF BEMBEX . 125 BEMBEX S PINOLI L E O OKING OUT OF NEST . . 131 BEMBEX . . 136 A CORNER OF THE BEMBEX COLONY . I37 NEST OF CERCERISN IGRESCEN . S 142 CERCERI C S L YPEATA . I43 CERCERI D S ESERT A L OCALIT S Y T UDY BE FORE LEAV ING NEST . I53 PHILANTH P U U S N CTATUS I57 NEST OF PHILANTH P U U S N CTATUS . . 163 APHILANTHOP G S ATHERING ANTS . . 169 TRYPOXYLROUBNR OCINCTUM . . 185 MALE TRYPOXYL AW O A N IT ING THE FEMALE . . 191 TORNAD W O A SP POMPILU Q S U INQUENOTA D T IG U - S GING NEST . I97 POMPILU Q S U INQUENOTAT . US I99 EPEIRA S TRIX P ARALYZED AND HUNG UP ON BEAN PLANT B Y POMPILU Q S U INQUENOTA O T U U T S O , F THE WAY OF ANTS . . 203 NEST OF P. QUINQUENOTATU . S . 213 POMPILUMSA RGINATUS . . 223 LIST OF ILLUSTRATIONS PAGE THE HOME-COMI O N F G S CELESTU . S . 241 NEST OF AGENIA B OP BYCIN . A 245 LYCOSA K OCHII F , OUND IX NEST OF AGENIA BOM BYCINA . 2-15 TACHYTE . S 3 9 NEST OF TACHYT . ES . 251 CHLOKION AN D THE INDISCREE C T R ICKET . 257 HORIZONT C A E L L LS O F THE MUD-DAUBER . . 271 COURSE F OLLOWED I Y IO IPILUFUS SCIPENN IN I S FINDING HER SPIDER A , ND IN RETRACING HER STEPS TO THE NEST . 283