. On the instincts and habits of the solitary wasps . 2 CHAPTER Toilers op the Night {Crabro stirpicola) . 46 CHAPTER V. Two Spider Hunters [Salhcs conicus and Aporus fasci- atus) ......... 53 CHAPTER Island Settlement [Bembex spinolae) ... 58 CHAPTER Little Flycatcher [Oxybelus quadrinotatus) . 73 CHAPTER VIII. The Wood-Borers [Trypoxylon albopilosum and Trypoxy- lon rubrocincturn^ . . . . 77 CHAPTER Bug-Hunters (^Astata unicolor and Astata bicolor) . 88 iv CONTENTS. CHAPTER X. Page. The Diodonti ........ 99 CHAPTER Grave Diggers [Cerceris and Pfiilanthus)
. On the instincts and habits of the solitary wasps . 2 CHAPTER Toilers op the Night {Crabro stirpicola) . 46 CHAPTER V. Two Spider Hunters [Salhcs conicus and Aporus fasci- atus) ......... 53 CHAPTER Island Settlement [Bembex spinolae) ... 58 CHAPTER Little Flycatcher [Oxybelus quadrinotatus) . 73 CHAPTER VIII. The Wood-Borers [Trypoxylon albopilosum and Trypoxy- lon rubrocincturn^ . . . . 77 CHAPTER Bug-Hunters (^Astata unicolor and Astata bicolor) . 88 iv CONTENTS. CHAPTER X. Page. The Diodonti ........ 99 CHAPTER Grave Diggers [Cerceris and Pfiilanthus) . 108 CHAPTER Spider Ravishers {Pomjnlns and Agenia) . 125 CHAPTER Enemies of the Orthoptera . . .167 CHAPTER Mud-Daubers (Pelopaeus) . . .176 CHAPTER XV. Extracts From Marchals Monograph on Cerceris or- NATA 200 CHAPTER the Sense of Direction in Wasps . . .211 CHAPTER Stinging Habit in Wasps 220 CHAPTER ..... . 228 WISCONSIN NAT. HIST. SURVEY. BULLETIN II Pi. J- H Ernerron del. SORIWttSTfRHUIKJCO. PLATE I. Fig. 1. Pompilus marginatus ? , X 2. Fig. 2. Pompilus fuscipennis ? , X ^• Fig. 3. Philanthus punctatus ? , X 2. Fig. 4. Astata hicolo7- ? , X 2. Fig. 5. Crabro stirjncola ? , X 2. Fig. 6. Bembex spinolae ? , X 2. Fig. 7. Pompilus quinquenotatus ? , X 2. Fig. 8. Ceroeris clypeata ? , X 2. WISCONSIN NAT. HIST. SURVEY. E3ULLETIN II PL. IIoninstinctshabit00peck
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