450 Annuls nf fhf South Africnn Museum. 



EXPLANATION OF PLATES V— XII. 



PLATE V. 



FIG. 



1. Hemianiar ephippiger. Venation of Aiiisopfcia. Lettering of veins in front 



wing, of spaces in hind wini;. C. Costal. Sf. Subcostal. _R + Jtf. Common 

 stalk of radial and medial. C«. Common stalk of cubital. A. Anal. 

 R. Radial. Rs. radial sector. Rsa Second branch of radial sector (in 

 Aeschninse). Rspl. Radial supplement. B. Bridge from base of radial 

 sector to medial. 3/; -4. Common stalks and branches of medial. Jl/.s^)?. 

 Medial supplement. Cui and .;.. Branches of cubitus. Anq. Antenodal 

 cross-veins. Pnq. Postnodal cross-veins. Arc. Arculus. Nod. Nodus. 

 Pt. Pterostigma. c. Costal, sc. Subcostal, m. Medial, cu. Cubito-anal. 

 t. Triangle. M. Supra-triangle. ai. Divisions of anal loop. d/". Discoidal 

 field, mbr. Membranula. ^ra- Branches of anal vein in liind wing. 

 Oblv. Oblique vein at distal end of bridge, bridge between o 'Mid O- 



2. Metacnemis valida. Yena,tion of Zycjoptera. Lettering as in fig. 1. Apart 



of anal vein between petiole of wing and Cu«. Q. Quadrangle. 



PLATE VI. 



1. Lihelliila fidva. Nymph (European). Traclieation in nodal region : 



origin and crossing of K.s, and formation of bridge. 



2. Libellula fuiva. Nymph. Tracheation in triangular region : inflection of 



cubital fork (front wing). 



3. Libellula fxdva. Nymph. Tracheation in trangular region : inflection of 



cubital fork (hind wing). 



4. Caloptcryx virrjo. Nymijh (European). Tracheation : absence of radial 



crossing and inflection of cubital fork (left side). 



0. Ischnwra elegaiis. Nympli (European). Tracheation: reduced form of 



zygopterous venation (right side). 



6. Libellago caligaia. M'Fongosi. Upper (J, lower $. 



7. Fhaon iridipennis. <?. Natal. 



8. Lestes plagiatus. $ . M'Fongosi. 



PLATE Vri. 



FIG. 



1. C'hlorolesles conspicHa. $. Cape. 



2. „ „ . V' . Cape. 



3. „ peringueiji. ^ . Ceres. 



4. „ fasciala. ^ . Albert District. 



5. „ tessellata. g . Cape. 



6. „ longicauda. ^. M'Fongosi. 



