PLATE XI. 



Fig. 1. Nest of Sphex iehneumonea; tunnel 73^ inches long; pocket }^ 

 inch by % inch. 



Fig. 2. Nest of Philanthus punctatus ; A— B, 3)^ 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, 1}4 inches; 

 A— C, 2 inches; C, four cells where the bugs were stored. B — C 

 gallery occupied by wasp while in nest. 



Fig. 4. Nest of Chlorioyi coeruleum; nearly J4 natural size. 



Fig. 5. Nest of Tachytes spf.; tunnel 2 inches long; pocket 1>^ inches 

 below surface. 



Fig. 6. Nest of Crabro stirpicola in blackberry stem; X 2. 



Fig, 7. Bottle fastened to stem to measure work of Crabro stirpicola. 



