Explanation of Plates. 571 



Fig. 20. irtptnfs sp. , Jan. 1900. 



21. „ Uabidus, Feb. 1900. 



22. Trymodera aterrima, Nov. 1898 to Jan. 1899. 



23. Epicauta pectoralis, Nov. 1898 to Jan. 1899. 



24. „ suhcoriaoea „ „ „ „ 



25. „ ccelestina, Feb. 1900. 



26. „ „ orsM?>w/-iace(<, Nov. 1898 to Jan. 1899. 



27. Lytta moesta, Nov. 1898 to Jan. 1899. 



The following figures represent a beautiful little group 

 of species of Megachile and their mimics. 



28. Megachile nasalis ? , Nov. 1899. 



29. „ chrxjsorrhoea 9, Jan. 1900. 



30. Ciielioxus pnsilla (^, Dec. 1899. Probably parasitic on one 



of the two former species. 



31. Laphria sp., near Jlavipes, Feb. 1900. 



Explanation of Plate XXIT. 



Group of yellow-tailed, black Mashonaland Aculeates, 



ALMOST ENTIRELY DiPLOPTERA, AND THEIR MlMICS. A XyLO- 

 COPID AND ITS ASILID MiMIC. 



All the figures are about 4 of the natural size. 



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

 except those otherwise described, are from Salisbury, Mashonaland, 

 5000 feet. 



Fig. 1. Scolki enjthropyga (^, Dec. 1899. 



2. „ „ $,Aprill900. 



3. yalivs tamideri ^, Mar. 1900. 



4. „ „ $, Nov. 1899. 



5. „ spectrum ,^ , Jan. 1900. 



6. Bhpichium synagroides ^ , Feb. 1900. 



7. Synagris abyssinica, var. $ , Umtali, 3700 feet, Dec. 1900. 



8. „ mirabilis 9> April 1899. 



9. „ emarginata $ , Mar. 1900. 



10. „ analis ? , Umtali, 3700 feet, Dec. 1900, 



11. „ „ (^, Dec. 1899. 



12. „ xanthura $, Jan. 1900. 



13. „ emarginata ^, April 1900. 



