Bul. 91, Bureau of Entomology, U. S. Dept. of Agriculture Plate XXVI. 
Fic. 1.—RILEY REARING CAGES AS USED AT GIPSy- 
MOTH PARASITE LABORATORY. (ORIGINAL. 
Fic. 2.—INTERIOR OF ONE OF THE LABORATORY STRUCTURES, SHOWING TRAYS USED IN 
REARING APANTELES LACTEICOLOR IN THE SPRING OF 1909. (ORIGINAL. 
