INDEX 



Rhopalum pedicellatum, 73 ; 

 strong power of localization, 



73- 

 nibrocinctum, 74. 



Social wasps, general habits, 3 ; 

 color sense, 5 ; sense of smell, 

 8 ; affecting plant distribution, 

 II ; number in one nest, 12. 



Solitary wasps, general habits, 15. 



Sphex, habits noted by Fabre, 

 69. 



ichneumonea, 56; nests be- 

 gun and deserted, 56; locality 

 study, 58 ; intelligence, 305. 



Tachysphex tarsata, 261. 

 Tachytes sp. ?, 248. 

 peptonica, 252. 



Trypoxylon, immense numbers of 

 spiders destroyed, 195. 



albopilosum, 190. 



bidentatum, 194. 



nibrocinctum, 180; protec- 

 tion of nest by male, 181 ; male 

 sometimes assists in storing 

 nest, 182 ; order in which eggs 

 hatch, 180. 



Vespa germanica, 13. 

 maculata, 13. 



Wesenberg, on habits of Bem- 



bex rostrata, 139. 

 Wheeler, W. M.,on capture of ants 



by Aphilanthops f rigidus, 1 76. 

 Williston, S. W., on habits of 



Ammophila yarrowii, 40. 



