The Odonata or Dragonfliee of South Afrii-n. 337 



Abdomen ochreous or dull orange at sides ; dorsum of segments 

 1-5 bronzy brown, 6-9 black, 10 orange with a basal black spot. 



Pterostigma very light ochreous. Post-nodal cross-veins 8 in front 

 wings, 7 in hind wings. 



Immature females have abdominal segments 16 orange, with very 

 narrow black rings at the joints ; in one specimen the dark colour of 

 dorsum appears in narrow and incomplete lines. 



J.Abd. 16-5, Jnlir. 10 mm. 9 , 19, 12. 



A badly damaged female from Bukama (29 . v . 1911, Dr. Bequaert ) 

 is probably of the same species (Mus. Tervueren). In Mr. E. B. 

 Williamson's collection there is a pair of Agriocnemis from Salisbury, 

 Mashoualand (ii . 1900, Marshall) which probably belong to a different 

 species, but they are too much damaged for identification. The same 

 reservation is to be made for two males in the British Museum 

 collections, one labelled "Marshall collection 1910, ir without locality, 

 the other one " N.E. Khodesia, Upper Luangwa River (27 . vii, 13 . viii, 

 1910, S. A. Neave)." 



Probably several species of the genus exist in the faunal region 

 here discussed, but none is to be expected outside that part of the 

 region where climatic conditions are of the tropical type. 



II. SUBORDER ANISOPTERA. 



Anisoptera are the " dragouflies " in restricted sense, the strongly 

 built, swiftly moving and generally larger members of the Order. 

 American authors give, in contrast to them, the name " damsel-flies " 

 to the tiny Zygoptera. 



The various divisions of. Anisoptera are rather different in habits, 

 and some indications regarding them may better be reserved to the 

 single groups. The larger subfamilies are represented in the fauna 

 under discussion by a fair number of species, only the Cordulitiae 

 Vicing poor; three subfamilies, all belonging to the family Aeschnidae 

 and each consisting of a very limited number of species, are absent 

 from the South African as well as from the Ethiopian fauna and not 

 likely to be found there (the oriental Chlorogomphinae, palaeo-nearctic 

 Cordulegasterinae and the Petal itrinae, of which a few species persist as 

 a kind of " living fossils " in Australia, Chili, North America and 

 Japan). 



C. Lateral lobes of labium of about equal si/.e as median lobe, two-jointed, the 

 terminal joint narrow and pointed i Text-Jig. 2). Triangles similar in 

 both pairs of wings, their longer axis in the long axis of the wing ; their 

 proximal side distal to the arculus in both wings. 



