—— peptonica, 252. Trypoxylon, immense numbers of spiders destroyed, 195. —— albopilosum, 190. —— bidentatum, 194. —— rubrocinctum, 180; protection 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 Bembex rostrata, 139. Wheeler, W. M., on capture of ants by Aphilanthops frigidus, 176. Williston, S. W., on habits of Ammophila yarrowii, 40. The Riverside Press _Electrotyped and printed by H. O. Houghton & Co. Cambridge, Mass., U. S. A._ FOOTNOTES: [1] _Introduction to Modern Classification of Insects_, ii, 189. [2] _Naturalist in Nicaragua_, p. 136. [3] Fabre says that all of the three species of Sphex that he has studied lay the egg on this identical place. He places immense importance on this point, which seems to us rather fanciful. He also noticed the pulsation of the abdomen and the movements of the other parts. [4] Sharp, _Insects_, page 130. [5] The nest being completed, the wasp went skimming over the ground as indicated by the line, until the spider, which had previously been stung and placed upon a leaf, was found. She then dragged it some distance beyond the nest to the point 2, from which place she took it to the nest. [6] The wasp flew from nest to 1, paused a moment, then flew back; then to 2, paused and flew back; then to 3, paused, then to 4, paused and flew back to nest; flew to 4, 5, 6, 7, 8, and 9, pausing at each spot, and flew back to nest along 10; flew, successively, along 11, 12 and 13, resting at the spots designated; from 13 she circled around nest in direction of arrow points and departed. [7] The continuous line shows the course walked over by the wasp, the short marks at right angles representing resting–places; the broken line indicates flight. Line 1 shows the first study, leading back to the nest, and line 2 the second, ending in flight and departure. [8] _Ants, Bees, and Wasps_, p. 95. [9] The continuous line shows the course walked over by the wasp; the short marks at a right angle indicate resting–places; the broken line indicates flight. TRANSCRIBER’S NOTE: —Obvious print and punctuation errors were corrected. End of the Project Gutenberg EBook of Wasps, by George W. Peckham and Elizabeth G. Peckham