500 Annul* of tin' Su/if/i African 





 THELAIROSOMA FUMOSUM, n. sp. 



$ . Head white ; the width of the vertex' is ~ that of the eye ; 

 the black frontal band broadens in front, and is there wider than the 

 orbits ; proboscis, palps and antennae black, antenual chaetae black 

 and shoi't, plumose ; frontal setae descending on the genae as far as 

 the apex of the 2nd antennal joint. Thorax pruinose white with 2 

 broad dorsal bands prolonged on the pruinose scutellum ; the latter 

 with a pair of apical, crossed setae ; thorax with 4 dorso-central setae. 

 Abdomen black : segments 2, 3 and 4 with a moderately broad whitish 

 baud in the anterior part ; segments 2 and 3 more or less tinged with 

 reddish on the sides ; 1 pair of median marginal setae on segments 1 

 and 2. Wings fumose along the anterior border, and round the cells 

 which are thinned on the level of their insertion and more so at their 

 end. Two ciliae at the base of the 3rd nervure. Squamae whitish ; 

 halteres testaceous, the club obscure. Legs black ; claws of anterior 

 tarsi elongated. 



The ? resembles the 3 ; the frons is a little wider and bears 2 

 orbital setae ; the anterior tarsi are slightly dilated and the claws very 

 minute ; the abdomen has no reddish marks on the sides. 



Length 7-11 mm. 



Natal, Durban, several examples (H. W. Bell-Marley), S. Afric. 

 Museum ; Nyassaland, Mt. Malauje, numerous examples (S. A. Neave) ; 

 Gold Coast, Abura (W. H. Patterson), Entom. Ees. Comm. ; N.W. 

 Tanganyika, 1 $ (Ofrauer), Hofmuseums, Vienna. 



SUB-FAM. DBX1INAE. 

 GEN. EKIOTHKIX Meig. 



ERIOTHRIX EXPERRECTUS, B. B. in Litt. 



Of this species I saw 3 $ $ only, the characters of which can be 

 resumed as follows : Species oblonga ; thorace nigro ; abdomiue 

 flavotestaceo, paululum albo-pruinoso, vitta media nigricante atque 

 setosis numerosis iustructa. Alis hyaliuis, spina costali sat valida et 

 erecta, nervo 4 post cubitum appeudiculato, cellula 1, a saepe clausa 

 atque breve petiolata. Pedibus brunneis, unguibus omnibus in $ 

 elongatis. Capite albido-micante ; orbitis angustis ; vitta frontali lata 

 atque ferruginea ; antennis testaceis, articulo 3, atricante secundo non 

 longiore. Palpis flavis ; haustello corneo, porrecto. 



Length 9-10 - 5 mm. 



Cape of Good Hope. 



