. On the instincts and habits of the solitary wasps . PLATE XI. Fig. 1. Nest of Sphex ichneumonea; tunnel 73^ inches long; pocket J^inch by % inch. Fig. 2. Nest of PMlanthus punctatus; A—B, 33^^ inches; B—C, 5 inches;C—D, 14 inches; D—E, 8 inches. Fig. 3. Nest of Astata unicolor; A—B, 2 inches; B—C, IJ^ inches;A—C, 2 inches; C, four cells where the bugs were stored. B—Cgallery occupied by wasp while in nest. Fig. 4. Nest of Chlorion coeruleum; nearly % natural size. Fig. 5. Nest of Tachytes sp?,; tunnel 2 inches long; pocket 13^ inchesbelow surface. Fig. 6. Nest of Crabro stlrpicola in blackbe
. On the instincts and habits of the solitary wasps . PLATE XI. Fig. 1. Nest of Sphex ichneumonea; tunnel 73^ inches long; pocket J^inch by % inch. Fig. 2. Nest of PMlanthus punctatus; A—B, 33^^ inches; B—C, 5 inches;C—D, 14 inches; D—E, 8 inches. Fig. 3. Nest of Astata unicolor; A—B, 2 inches; B—C, IJ^ inches;A—C, 2 inches; C, four cells where the bugs were stored. B—Cgallery occupied by wasp while in nest. Fig. 4. Nest of Chlorion coeruleum; nearly % natural size. Fig. 5. Nest of Tachytes sp?,; tunnel 2 inches long; pocket 13^ inchesbelow surface. Fig. 6. Nest of Crabro stlrpicola in blackberry stem; X 2. Fig. 7. Bottle fastened to stem to measure work of Crabro stirpicola. WISCONSIN GEOL. AND NAT. HIST. SURVEY BULLETIN NO. II, PL. PLATE XII. Fig. 1. A thorough locality study by Sphex ich/ieumonea. Fig. 2. A hasty locality study by Sphex Ichneumonea. Fig. 3. Locality study of Astata blcolor. The wasp flew from nest to 1,paused a moment, then flew back; then to 2, paused and flewback; 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 tonest along 10; flew, successively, along 11, 12 and 13, resting atthe spots designated; from 13 she circled around nest in direc-tion of arrow points and departed. Fig. 4. A second locality study of Astata unicolor. The continuous lineshows the course walked over by the wasp, the short marks atright angles representing resting places; the broken line indi-cates flight. Line 1 shows the first study, leading back to thenest, and line 2 the second, ending in flight and departure. Fig. 5. Course followed by Pompilus fuseipennis in finding her spiderand in retracing her steps to the nest. The nest being com-pleted
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