570 Explanation oj Plates. 



Fig. 21. Orectocera (Paraphioiia) diabolvs, Feb. 1900. 



22. Exoprosopa umbrosa, Feb. 1900. 



23. Orectocera {Paraphania) diabohts, Jan. 1900. 



24. Tabanvs, very near bigiittatns, Dec. 1900. 



25. Tascia homochroa, Dec. 1900. 



26. Eednvivs, sp., April 1900. 



27. Hctrpactor tristis, April 1900. 



Explanation of Plate XXL 



Group of black, dark-winged Mashonaland Aculkates 

 chiefly fossores, and their mimics, etc. 



Second Pakt of Group, chiefly Fossokes. 



All the figures arc about i of the natural size. 

 All the specimens were captured by Guy A. K. Marsliall, at Salis- 

 Ijury, Mashonaland, 5000 feet. 



Fig. 1. Sjjhex bohemani ?, Dec. 1899. 



2. „ „ (?, Jan. 1900. 



3. „ njaniventris ^, Nov. 1899. 



4. „ p)elopeifov)ms (^, Jan. 1900. 



5. „ „ 5, June „ 



6. „ xanthocerus ?, Dec. 1899. An Asclepiad p<illen- 

 mass is seen on distal end of tlie left anterior leg. 



7. Sphex imibrosKs 9> ^^ay 1900. 



8. Sceliphron rhahjbeum ^J, Feb. 1900. 



9. Tach\ites natalensis (^ , Jan. 1900. 



10. „ „ ? , Dec. 1899. 



11. Ammophila litdovicns 9 , Feb. 1899 to Jan. 1900. Ascle- 



piad pollen-masses are thickly crowded on the tarsi of the 

 two anterior pairs of legs. 



12. Ammophila htdoricus ^J, June 1900. 

 1.3. „ bcniniensis, 9 > J^m- 1900. 

 14. EuuioiP^ tinctor ^, Dec. 1899. 



16. „ diisrhera S, Feb. 1900. 



17. „ „ 9, Nov. 1899. 



18. XylocojM hottcnfotto. $, Jan. 1900. 



19. „ carinata ?, Feb. 1899 to Jati. 1900, 



