PLATE XI. 



FIG. 1. Nest of Sphex ichneumonea; tunnel 7^ inches long; pocket ^ 

 inch by % inch. 



PIG. 2. Nest of Philanthus punctatus ; A B, 3J 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, 1J^ 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 C Morion coeruleum; nearly ^ natural size. 



FIG. 5. Nest of Taehytes sp?.; 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. 



