EXPLANATION OF PLATES 



and 

 List of Species. 



In every case the description of the species bears 

 the same serial number as the figure of it. As al- 

 most every species and variety is figured, the expla- 

 nation of the plates becomes a complete list, by sim- 

 ply including the five unfigured forms with the ex- 

 planation "not figured." 



Magnification is not uniform. Many of the fig- 

 ures were made with camera lucida and others with 

 projection apparatus, but these aids do not work well 

 with genitalia, and most of the drawing was free- 

 hand. 



In each case the figure shows the male genitalia 

 drawn out and viewed from the left side, unless other- 

 wise indicated. Hairs on forceps and accessory plate 

 are generally omitted for simplicity, unless very dis- 

 tinctive. 



