Explanation of Plate XV 



Fig. I. Details of "saw" in Perga vacillans. 



2. „ „ ., latreillei. 



3. .. .. .. spinolae. 



4. ,. .. ,. glabra. 

 r>. .. ,. ., bzlla. 



<>. .. .. ., " divaricata " (= praecedensl). 



7. ,. ,, .. rubripes. 



8. .. ., ,, hartigii. 



!t. .. ,, ., gravenhorstii. 



10. ., ,. ,, bicolor. 



1 1. ,, ., Xyloperga halidaii. 



12. ,, ,, .. aurulenta. 

 I'A. „ ., .. imivittata. 

 14. Third cubital cell in Perga <l<>r--«i!is. 



\7). ,, ,, Xyloperga univittata. 



L6. Genital armature of Perga antiope, <$. 



17. Larva of Perga sp. (probably dorsalis). 



18. Antenna of Perga mayrii. 



19. Hind tibia and tarsi of Perga antiopa, . 



20. Antenna of Perga cdmeronii, . (4 apical joints). 



(14, 15, 18 and 20 are photographed from drawings made by the 

 .'.nli'i from specimens in B.M.) 



