The Odonafa or Dragonflies of South Africa. 321 



The position of M., aud M^„ relatively to post-nodal cross-veins 



shows considerable variability, the extremes of the series being 



5+2.5+2 6+3.6+3 . 



■ , , — 7——i and p— To — FTTi. the most reo'iuar position apparently 

 4+2.4+3 5 + 3.5 + 3 o i ii j 



6 + 3.5 + 3 



4 + 3.4+3' 



lieiug 



Enallagma eotundipenne, u. sp. 



Mus. Stockholm: 1 ^J , Catfraria (Wahlberg). S. Afr. Mus. : 1 ? 

 not dated, but most probably from M'Fougosi, Zululand. 



These two specimens belong most probably to the same species — a 



form not otherwise rei:)reseuted in the material examined. They are 



similar in stature and in colour scheme to E. nigridorsum, Imt the 



appendages are rather widely different, and both sexes are distinct by 



their wings broadly rounded ajiically, the pterostigma being dilated 



accordingly in the autero-posterior dimension. Ciiq half-way between 



first and second Anq or slightly more distally. A* proximal to Cuq by 



almost twice the length of Cuq. Arculus very slightly distal to second 



A iir 1 1^ 5 + 3.5 + 2. .5 + 3.5 + 3. ^ 

 Anq : Mo and M.a . „ ,- „^^o < -r-^ — :r-^^ lU 9 • 

 -" - ^ 4+3.4+3 "4+3.4+3 * 



(^ . Occiput light blue, black spots at the foramen. Labium 

 whitish. Dorsal surface of head, a rather broad line at base of 

 labruni, postclypeus entirely, frons and vertex to half-way between 

 anterior ocellus and postclypeus light blue marked with black ; blue 

 postooular spots narrow, cuneiform, no blue line on occipital border. 



(Prothorax damaged.) Thoracic dorsum black ; complete, narrow, 

 blue ante-humeral lines, less than one-half the breadth of median 

 black of corresponding side. Humeral black posteriorly to first 

 lateral suture in dorsal third slightly less ventrally ; black dot in 

 dorsal end of second lateral suture. Sides otherwise blue, ventral 

 side whitish. Legs very light greenish ; femora broadly, tibiae 

 narrowly lined with black externally. 



Abdomen segments 1 to middle of 3, 8 to 10 blue, middle of 3 to 

 7 yellowish, marked with black ; very broad dorsal band (almost as 

 in nigridorsum), very narrow, dorsally interrupted light basal rings 

 on 3 to 6 ; 8 entirely blue ; 9 terminal transverse black spots ; dorsum 

 of 10 broadly black. Appendages (Text-fig. 34). 



Pterostigma grey, rather broadly bordered with blackish, slightly 

 larger and darker in front than in hind wing. 



9 . Sides of prothorax greenish blue, dorsum black with two large 

 dorsal posterior bluish spots and the anterior margin broadly blue. 

 Posterior lobe erect to an angle of about 60°, narrow, trapezoid, the 



