Explanation of Plates. 569 



Tlie remaining figures represent a group containing a 

 Locustid and an Hemipteron mimetic of ants. 

 Fig. 53. Cawponotus sp. ? § x U, Feb. 17, 1901. 



54. „ scnVt'i/.s, 9 X 1|, Feb. 17, 1901. 



55. ,, cosmicns, ? min. x H, Feb. 17, 1901. 



56. „ „ 9 mnj. „ „ „ 



57. Me(jniu'tns nti-atus, x U, Feb. 17, 1901. 



""• )) ,1 ,, „ )) 



59. Miirma-ophina Ifalhu; x U, Feb. 17, 1901. 



Explanation of Plate XX. 



Group of black, dark-winged i\Iashoxaland Aculeates and 

 THEIR Mimics. 



First Part of C4roup. 



Tlie Aculeates with one exception all Fossores. 

 All the figures are about i of the natural size. 

 All the specimens were captured by Guy A. K. Marshall, at 

 Salisbury, Mashonaland, 5000 feet. 



Fig. 1. Mntilla atrojws ^ , Nov. 1899. 



2. Ti'pMa rugosa ? , Feb. 1899. 



3. Elis lachesis ?, April 1900. 



4. „ fasciatipennis 9, April 1900. 



5. „ „ 9, Feb. „ 

 (J. Scoiia alar is ^ , April 1900. 



7. „ „ ? , Mar. „ 



8. „ „ ? , April „ 



9. ,, fruterna (^ , Jan. „ 



10. „ „ ? , April „ 



11. ,, cyanea ^ , Jan. ,, 



12. „ „ 9, Mar. „ 



13. „ affinis (^, June „ 



14. Saliiis atropos $ , Mar. „ 



15. „ vindex ?, Nov. 1899. 



16. „ (Icdjax ^, Feb. 1899 to Jan. 1900. 



17. „ 7'egina S, Feb. 1899. 



18. „ ohscurns $, Bee. 1899. 



19. Pampilus sepnlchralis $, April 1900, 



20. „ fnistratvs ? , Nov. 1899. 



