EXPLANATION OF PLATE I— THE CURRANT FLY. 

 (EpocJira Canadensis, Loew.) 



All excepting 1 Figure I were drawn by the writer. 



Figure 1. The female fly enlarged about seven and a half times. 

 Drawn by Mr. J. H. Emerton from slides of the wing and ovipositor 

 prepared by the writer and from pinned flies. The two basal joints 

 of the abdomen are drawn as one. The real number, including the 

 long terminal segment is seven instead of six. 



Figure 2. Egg showing form, sculpture and pedicel, enlarged 

 fifty times. 



Figure 3. The larva enlarged about five times. 



Figure 4. The pupa enlarged eight times. 



Figure 5. The candal spiracle of the larva much enlarged. 



Figure 6. First two segment of the head showing the tubercles on 

 the head, the rugose motith and the rasping organs. Enlarged twenty- 

 five times. 



Figure 7. Seed of currant with gelatinous envelope showing* larva 

 protruding from it. Enlarged. 



Figure 8. External genitalia of male. Enlarged twenty times. 



Figure 9. Side view of abdomen of female with ovipositor protrud- 

 ing and bent backward in the position it takes as the egg is deposited 

 under the skin to one side of the puncture. Enlarged. 



FigurelO. Abdomen of male with gentalia and showing six seg- 

 ments. Enlarged. 



