Smithsonian Report, 1917. — Safford. 



Plate 52. 



Jewel Wasps (Trichrysis parvula) Found in Nests of Potter Wasp 



(EUMENES), WHICH THEY ENTER TO DEPOSIT THEIR EGGS. 



The upper one is rolled up like an armadillo for self-protection. Enlarged 6 diameters. 



