ILLUSTRATIONS 



MIMETIC LANGUAGE IN ANTS' 123 



ANTS IN ATTITUDE OF COURAGE, ANGER, AND ALARM . . . 125 



PTERATIC LANGUAGE 132 



DEATH'S-HEAD MOTH WHICH MIMICS THE PIPING OF A QUEEN BEE 139 

 STRIDULATING ORGANS OF LOCUST AND CRICKET. RED-LEGGED 



LOCUST (MELANOPLUS FEMUR-RUBRUM) 141 



JAPANESE CAGES FOR STRIDULATING INSECTS 142 



PROBABLE STRIDULATING ORGANS ON ABDOMINAL PLATES OF 



ANTS 145 



THE FACE OF AN ANT, SHOWING THE FLEXIBLE ANTENNA . 148 



THE CHALLENGE WITH CROSSED ANTENNAE 151 



A QUEEN ANT SURROUNDED BY HER COURTIER GUARD . . 157 



A PEEP INTO AN ANT COMMUNE 159 



WORKERS TAKING EGGS FROM THE QUEEN MOTHER . . . 161 



A TRUANT QUEEN BROUGHT HOME 163 



AN EMMET NURSERY FOR THE YOUNG 166 



YOUNG WINGED QUEEN OF HONEY-ANT 173 



A MARRIAGE-FLIGHT, OR " SWARM," OF WINGED MALE AND 



FEMALE ANTS . . 176 



ARRIVAL OF THE FOOD-BEARERS AMONG THE WINGED DE- 

 PENDENTS 179 



THE BRAINS OF ANTS 1S3 



WINGED FEMALE ANTS AT PLAY ON THE PLAZA 187 



WAR-LIKE DWARFS ATTACKING AN OCCIDENT ANT ... 196 



A PLUCKY LILIPUTIAN ATTACKING AN OCCIDENT AXT . . . 197 



SLAVE-HOLDING ANT 200 



THE FLORIDA HARVESTER (POGONOMYRMEX CRUDELIS) . . 204 



MANDIBLES WHICH ARE USED AS WEAPONS BY WORKERS OF 



AGRICULTURAL ANTS 206 



USING THE STING IN FLIGHT 207 



THE BEETLE XENODUSA CAVA LECONTE 230 



PHEIDOLE INSTABILIS AND ITS PARASITES 233 



ORASEMA VIRIDIS 234 



PUPA OF ORASEMA 235 



SOLENOPSIS FUGAX 254 



SECTIONAL VIEW OF HOST-ANTS' NEST, SHOWING THE GAL- 



LERIAS WHICH THE THIEF-ANTS ENTER 255 



xiii 



