224 



THE REPRODUCTIVE SYSTEM 



[CH. 



and S. macrostigma appear to have long well- formed ovipositors; 

 whereas others, e.g. S. claviculata, have none at all. An examina- 

 tion of the long ovipositors in this tribe shews us, however, that, 

 as in (ii), the valves are absent, and the median processes reduced. 



Fig. 101. Ovipositor of Cordulegaster 

 annulatus Latr., $, lateral view( x 4). 

 ap anal appendages; br bristles; ov 

 ovipositor; t tubercle. Original. 



Fig. 102. Ovipositor of Synthemis eu- 

 stalacta Burm., ? ( x 6). pa anterior 

 processes; pm median processes. 

 Original, chitin preparation. 



pTTl 



Fig. 103. Vulvar scale (vs) of Tramea 

 loewii Br., <j> ( x 4|). pm median pro- 

 cesses; 8, 9 abdominal segments 

 Original, chitin preparation. 



Fig. 104. End of abdomen of Uracis 

 ovipositrix Selys, $, lateral view. 

 After Ris. 



It is the anterior processes which, by union of their bases, and 

 widening of their distal ends, give the appearance of a large 

 ovipositor. No species of this tribe uses its ovipositor for placing 



