DESCRIPTION OF THE PLATE. 
Fig. 1. Clear-winged wheat-fly, Cecidomyia Tritici. 
Fig. 2. Spotted-winged wheat-fly, Cecidomyia cereatie. 
Fig. 3. Cecidomyia thoracica. 
Fig. 4. Male of the clear-winged wheat-fly. 
Fig. 5. Cecidomyia tergata. 
Fig. 6. Wheat-fly at rest, with its wings in their natural position. 
Fig. a. Kernel of wheat, its chaff parted down to show tho worms in their usual 
situation. 
Fig. b. A mature worm or larva, highly magnified. 
Fig. c. Wheat-head, with the chaff at • • • as bent down by the yellow-bird 
in feeding upon the worms, the kernels remaining at ft- 
Fig. e. Part of a male antenna. 
Fig./. Tip of the abdomen, with the ovipositor drawn out (from Curtis]. 
Fig. g. Foot of a wheat-fly, highly magnified to show its several joints. 
Fig. h. Part of a female antenna. 
Fig.«. Wheat-fly in its natural size. 
Fig. k. Magnified wing of Cecidomyia cerealu. 
Fig. I. Magnified wing of Cecidomyia caliptera. 
