African Phhhotomtc Diptera. 213 



second joint dusky with a reddish tinge, third joint ferru- 

 ginous, first and second joints slightly yellowish pollinose, 

 first joint with long brownish hairs above; proboscis curving 

 downwards. Thorax clothed with yellowish pile, longer and 

 somewhat paler on pleurse. Abdomen : first segment with a 

 black median blotch, not reaching hind margin and almost 

 concealed by scutellum ; second segment with a median 

 black spot roughly resembling a truncate triangle, which has 

 its base resting on front margin and scarcely extends beyond 

 middle of segment ; second and third segments with a more 

 or less distinct black patch on the lateral margins, and third 

 segment usually also with some indistinct blackish markings 

 near the middle line ; first segment, except on median black 

 area, clothed with short, appressed, shining, chrome-yellow 

 hair ; second and following segments, except on hind borders, 

 clothed w^ith short appressed black hair ; hind borders of 

 second, third, and fourth segments clothed with appressed, 

 shining, silvery-white hair, forming transverse bands which 

 are deeper towards the sides ; hind borders of following 

 segments similarly fringed with shining chrome-yellow hair, 

 median portion of band on third segment also sometimes 

 chrome-yellow^ ; black hair on fifth and following segments 

 longer, forming a fringe at tip of abdomen ; ventral surface 

 of first segment blackish, of second and third segments 

 orange-buff, clothed with minute, appressed, shining, chrome- 

 yellow hair, but without lighter bands on hind borders ; 

 ventral surface of fourth segment similar in coloration, but 

 with hind border lighter, and with base or a band across the 

 middle dark brown ; ventral surface of remaining segments 

 black or blackish brown, with hind boi'ders yellow and 

 cluthed with chrome-yellow hair. Winys : first posterior cell 

 closed at a distance of from 0*75 to 1 mm. before reaching 

 margin ; fourth posterior cell closed at one third of this 

 distance or less from margin ; stigma ochreous ; a tuft of 

 whitish hair on base of costa, conspicuous when wings are in 

 resting ])Osition. Squama iwrcciain-like. Ha/feres : stalk 

 ochraceous, knol) yellowish white, conspicuous. Lrf/s : coxie 

 yellowish-grey p(jllinose, clothed with yellowish hair; femora 

 clothed with black, tibiic with bright cream-coloured hair. 



Mashonaland, Southern Rhodesia: type and five other 

 specimens from Salisbury, Ai)ril, November, Deccml)er 1899, 

 and iMarch 19U0 (G. A. K. Marshall). 



In addition to the foregoing, the Museum collection con- 

 tains a MMU's t)!' s[)eeimens of what appeal's to be a suhs[)ecies 



