SYEPHUS. SPHJEBOPHOBIA. 35 



not reaching the sides and uniting in the middle, forming there- 

 fore a semilunar band, which is emarginate in the middle ; fifth 

 entirely black, with an indistinct lateral yellowish spot ; genitalia 

 shining black ; venter yellow, dark at the apex, smooth and shining 

 in the middle, where it is bare. Legs yellow, including the fore 

 coxa? ; tarsi dark at the apex ; hind legs with the femora and tibia? 

 broadly black. Wings greyish hyaline, with the mediastyial cell 

 wholly dark yellow, without a darkened stigma. 



Type cJ, from the Cape (ex coll. W. W. launders). 



Genus 6. SPHJEROPHOEJA, Sf. Fargeau (1825). 



This is the first time that this genus has been recorded from the 

 Ethiopian Region. 



30. Spliaerophoria qnadrituberculata, sp. n. 



c? ? . Length of male 9 mm., of female 7 mm. 



A somewhat aberrant species, distinguishable from any other in 

 the genus by the abdomen being without yellow bands and. in the 

 m.ile sex, provided with four very prominent tubercles, which recall 

 th.>se of the feiiLile of the Neotropical Acrochordonode* dentipes, 

 but are even more prominent. 



Fig*. 6. Sphaerophoria qiuidritiiberc.iilata, sp. n. 

 Abdomen of tf from the right side. X 12. 



. Head black, shining on the vertical triangle ; frons and face 

 , unspotted, with short and soft white hair; peristoma narrow, 

 yellow ; facial tubercle a little more prominent than the antenna I 

 one ; eyes bare, the line of contact much shorter than the vertical 

 triangle ; antenna? short, wholly yellow, the third joint rounded, 

 with a blackish arista ; postocular fringe very short and sparse, 

 dark and a little longer above ; posterior orbits silvery in the 

 middle. Thorax shining aeneous, clothed with erect grey hair; 

 lateral yellow stripe running from the humeri to the suture ; 

 pleune greyish, with opalescent reflexions and sparse hair, nieso- 

 and metapleune yellow. Seutellum yellow, with pale hair. 

 Sqnamulie small. Avhitish, with a short fringe ; halteres yellow. 

 Abdomen cylindrical, very narrow, with rather long but sparse 

 greyish hair ; first segment shining black ; second very long, 

 shining black, reddish towards the sides, with a narrow dull black 

 transverse band a little behind the middle ; third a little shorter, 



