71 



EXPLANATION OF THE PLATES. 



PLATE I. 



Fig. Fig. 



1. Dory lus Hindost anus. 10. 



2. Rhogmusjimbriatus. 



3. Labidus Burchellii. 11. 



4. JEnictus certus. 



5. Node of the abdomen of 12. 



Dorylus helvolus. 



6. Node of the abdomen of 13. 



Dorylus qffinis. 



7. Node of the abdomen of 14. 



Dorylus nigricans. 



8. Node of the abdomen of 15. 



Dorylus glabratus. 



9. Node of the abdomen of 16. 



Dorylus Juvenculus. 



Node of the abdomen of 



Dorylus labiatus. 

 Node of the abdomen of 



Dorylus orient alis. 

 Node of the abdomen of 



Dorylus longicornis. 

 Node of the abdomen of 



Dorylus attenuatus. 

 Node of the abdomen of 



Dorylus atriceps. 

 Node of the abdomen of 



Dorylus atratus. 

 Node of the abdomen of 



Dorylus Hindostanus. 



In this Plate the nodes of the abdomen are figured in profile, 

 and are reversed, to show the form of the scale, or flattened 

 process, in the different species, which apparently forms a good 

 distinctive specific character. 



PLATE II. 



1. Anterior wing of Labidus 7- Anterior wing of Labidus 



Jurinii. Romandii. 



2. Anterior wing of Labidus 8. Anterior wing of Labidus 



Panzeri. Swainsonii. 



3. Anterior wing of Labidus 9. Anterior wing of Labidus 



Illigeri. Guerinii. 



4. Anterior wing of Labidus 10. Anterior wing of Labidus 



atriceps. Servillei. 



5. Anterior wing of Labidus 11. Anterior wing of Labidus 



Hopei. Burchellii. 



6. Anterior wing of Labidus 12. Anterior wing of Labidus 



Klugii. Halidaii. 



