EXPLANATION OF PLATE 18. 



Fig. 



1-4. Bidinus cyrtonotus (Boiirguigiiat). Aapies 



Fig. 



5. 



Bloemhof. 



Fig. 



6. 



' comptus (Melvill and Pousonby). 



Fig. 



7. 



' Cornells (Morelet). 



Fig. 



8. 



' alluaudi (Dautzenberg). 



Fig. 



9. 



' verreauxii (Bourguigiiat). 



Fig. 



10. 



' angolensis (Morelet). 



Fig. 



11. 



' inasakaensis (Preston). 



Fig. 



12. 



' tropicus (Krauss). 



Fig. 



13. 



' crystalUnus (Morelet). 



Fig. 



14. 



' (Pyrgophysa) canescens (Morelet). 



Fig. 



15. 



' " forskalii (Ehrenberg) 



Fig. 



16. 



Egypt. 



Fig. 



17. 



' " tvahlbergi (Krauss). 



Angoh 



All figures twice natural size. 



