30 / 



Each cercus partially covers a much larger, triangular 

 sclerite which extends from the lateral border of the tenth 

 tergum to the caudal apex of the eleventh tergum ; these are 

 the podical plates. 



By lifting the free end of the eleventh segment, the cau- 

 dal opening of the alimentary canal, the anus^ is exposed ; it 

 is situated between the podical plates. 



Caudad of the podical plates is the dorsal pair of pieces of 

 the ovipositor. 



Make drawings of the dorsal and the lateral aspects of this 

 part of the body ; in the drawing of the lateral aspect repre- 

 sent the entire abdomen. 



Caudal part of the abdomen of the male.— In the 

 male ten abdominal sterna are present ; the tenth is a hood- 

 shaped sclerite on the caudal aspect of the body. 



As in the female, the ninth and tenth abdominal terga are 

 united on their lateral margins. 



Projecting from the caudal margin of the tenth tergum 

 there is on the middle of the back a forked appendage, the 

 furcula. 



The eleventh tergum is furrowed by three deep longitu- 

 dinal grooves. 



The cerci are situated as in the female, but are longer. 



The podical plates are nearly as in the female. 



Make drawings of the dorsal and the lateral aspects of 

 this part of the body. 



