Apr. i, 1925 Two Imported Egg Parasites of the Gipsy Moth 
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Fig. 7 —Anastatus bifasciatus and its colonization: a, Collecting gipsy-moth eggs to obtain Anastatus for 
colonization; b, trays used for hatching the nonparasitized gipsy-moth eggs; c, interior of tray after the 
hatching of the gipsy-moth eggs is complete (mosquito netting full of webbing left by first-stage gipsy- 
moth larvae before they entered the glass tubes and were removed); d, hand-sifting tray; e, types of coloni¬ 
zation cages for Anastatus, the two on the right being the most satisfactory; /, six bushels of gipsy-moth 
eggs after having passed through the separating apparatus, the eggs being in the proper condition to be 
run through the bouncing apparatus. In b and c are shown methods used in preparing Anastatus for 
colonization before the apparatus shown in Figure 9 was developed 
