1 68 



BritisJi Dragoiflies. 



depressions, four dorsal and four lateral ; on the sides 

 there is a mottling of lighter and darker brown, more 

 conspicuous in some specimens than in others. No 

 dorsal spines, but fairly long lateral ones on segments 

 7, 8, and g. Anal appendages, upper one longer than 

 last two segments, straight, cut off concave at end ; 



Fig. 34. — NvMPH ok Anax impf.rator. 



(nat. size.) 



laterals small, about half length of upper one, pointed ; 

 inferiors slightly longer than upper one, tapering to 

 points, which cross when orifice is closed. Male genital 

 parts on ventral surface of segment 9 very small. 

 Female valves nearly three-quarters of length of seg- 

 ment 9. Male projection small, cut square at ti]J, 

 about half the length of lateral appendages, not very 



