| . | PAGE |
| PelopÆus on Nest, Group of Finished Cells, and Tube opened to show Spiders (page 266) | Frontispiece |
| Wasp Eating | 3 |
| Paper Nest with Side removed to show Construction of Combs | 11 |
| Ammophila Urnaria carrying Caterpillar to Nest | 19 |
| Ammophila Urnaria stinging Caterpillar | 27 |
| Caterpillar with Egg of Ammophila Urnaria | 29 |
| Nest of Ammophila | 31 |
| Ammophila Urnaria using Stone to pound down Earth over Nest | 39 |
| Thorough Locality Study by Sphex | 59 |
| Hasty Locality Study by Sphex | 61 |
| Sphex dragging Grasshopper to her Nest | 63 |
| Nest of Sphex | 69 |
| Oxybelus Quadrinotatus | 75 |
| Nest of Oxybelus | 79 |
| Aporus Fasciatus | 81 |
| Wasp Homes in the Log Cabin | 85 |
| Nest of Perennis | 89 |
| Nest of Anormis | 91 |
| Sexmaculatus in the Linden Roots | 99 |
| Crabro and her White Moths | 103 |
| Crabro Stirpicola | 106 |
| Bottle on Stem to measure Work of Crabro | 107 |
| Nest of C. Stirpicola | 113 |
| Ammophila sleeping in the Grass (after Banks) | 115 |
| Nest of Bembex | 125 |
| Bembex SpinolÆ looking out of Nest | 131 |
| Bembex | 136 |
| A Corner of the Bembex Colony | 137 |
| Nest of Cerceris Nigrescens | 142 |
| Cerceris Clypeata | 143 |
| Cerceris Deserta: Locality Study before leaving Nest | 153 |
| Philanthus Punctatus | 157 |
| Nest of Philanthus Punctatus | 163 |
| Aphilanthops gathering Ants | 169 |
| Trypoxylon Rubrocinctum | 185 |
| Male Trypoxylon awaiting the Female | 191 |
| Tornado Wasp (Pompilus Quinquenotatus) digging Nest | 197 |
| Pompilus Quinquenotatus | 199 |
| Epeira Strix paralyzed and hung up on Bean Plant by Pompilus Quinquenotatus, out of the Way of Ants | [xii]
[xiii] |
