(469) 



7. Additions to the Bombyliid Fauna of South Africa (JDipterci) , as 

 represented in the South African Museum. By Prof. M. BEZZI. 



THE Director of the South African Museum has sent me a small 

 number of Bombyliidae from South-West Africa, obtained after the 

 publication, on February 21st, 1921, of my memoir. These are now 

 Described. I have also added a few others, sent rne by Dr. H. Brauns, 

 that do not figure in my first list. Some of these will be more fully 

 described in my forthcoming paper on the African Bombyliidae belong- 

 ing to the Hungarian Museum at Budapest. 



BOMBYLIIDAE. 



BOMBYLIUS, Linn. 



BOMBYI-IUS PLAGIATUS, 11. Sp. 



Closely allied to B. acroleucus, Bezzi, and belonging to the same 

 group, but at once distinguishable by the more slender third autenual 

 joint and by the wings having the discal cross-vein placed much 

 bevoud the middle of the discoidal cell, and having moreover a broad 

 fuscous patch ending in a truncate form at the discal cross-vein. 



Type 9 , one specimen from Delarey (W. Transvaal), January, 1917 

 (Dr. H. Brauns). 



Length of body 9 mm. ; of wing 10 mm. 



Head and appendages exactly as in B. acroleucus ; the third joint 

 of the antennae is distinctly more slender at its broadest portion and 

 not broader than the second joint. Thorax as in B. acroleucus, like- 

 wise with three equal longitudinal stripes of black hairs on the back ; 

 bristles entirely black. Scutellum, halteres and squamae as in B. 

 acroleucus ; abdomen of a like pattern, consisting of two broad round 

 white spots on the sides of second and third segment and a smaller 

 one in the middle ; the terminal segments have the median spots more 

 developed, being thus almost entirely white ; the terminal bristles are 

 black at base and white at end. Legs as in B. acroleucus; the 

 wings have the same nervation, but are longer, and therefore the dis- 

 coidal cell is elongate and the second and third posterior cells shorter ; 

 the discal cross-vein is placed on the terminal third of the discoidal cell. 

 There is, moreover, a well-developed pattern, the extreme base to the 

 basal cross- veins being black as in B. acroleucus ; following is a 

 yellowish patch extending from the costa to the whole of the second 

 basal cell and filling up the whole of the costal cells ; then a broad 

 30 



