EXPLANATION OF PLATE II— THE CURRANT FLY. 

 (Epochra Canadensis, Loew.) 



This plate prepared by Mr. J. H. Emerton from dissections made by 

 the writer, shows the end of the last abdominal segment; the sheath 

 of the ovipositor; the guide; the ovipositor; the bristles terminat- 

 ing the abdomen; the triangular scales that point backwards and 

 cover the most of the sheath; the teeth upon the ovipositor and the 

 small bristles near the end. 



When not in use the ovipositor and guides are telescoped into 

 the sheath and the sheath into the long terminal abdominal segment. 

 The figure is enlarged one hundred and twenty times. 



