| . | 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 | [203] |
| Nest of P. Quinquenotatus | [213] |
| Pompilus Marginatus | [223] |
| The Home-Coming of Scelestus | [241] |
| Nest of Agenia Bombycina | [244] |
| Lycosa Kochii, found in Nest of Agenia Bombycina | [245] |
| Tachytes | [249] |
| Nest of Tachytes | [251] |
| Chlorion and the Indiscreet Cricket | [257] |
| Horizontal Cells of the Mud-Dauber | [271] |
| Course followed by Pompilus Fuscipennis in
finding her Spider, and in retracing her
Steps to the Nest | [283] |
| Locality Study of Astata Bicolor | [288] |
| Locality Study of Astata Unicolor | [289] |
| Second Locality Study of Astata Unicolor | [290] |
| Paralyzed Spider hung up on Sorrel by Quinquenotatus
while she digs her Nest | [295] |