GENUS STEGOMYIA 383 



as to be, together, shorter than the third joint. Scutellum nearly black, 

 with three silvery patches ; pleurse paler, with live white dots, three in an 

 upper and two in a lower row. Halteres fuscous. Legs nearly black, 

 the femora paler at the base, and gartered white just above the white 

 knee spots ; the apices of the tibiae also white. Tarsal claws of ? equal 

 and uniserrated on fore and mid, simple on hind legs ; those of $ mark- 

 edly unequal on fore and mid legs with an additional tooth to both of 

 the fore claws, but on the small claw only of the mid feet. Length. — 

 Abov;t 4 mm. ^ and 2 . 



Habitat. — Salisbury, Maslionaland, 4,000 feet. 



21. STEGOMYIA MINUTA, Theobald (Monog. I, p. 319). 



Wing veins with brovpn scales, black on the costa. Tarsi 

 dark brown, unhanded. Thorax nearly black, with irregular white 

 submedian lines, and a pair of white spots, rather to the front. 

 Abdominal segments black, unhanded, but with white lateral 

 spots. Proboscis black. 



5 . — Head dark brown, clothed with Hat dark brown scales, with a 

 patch on each side converging to the nape, and another lateral patch 

 lower down ; upright black forked scales in the middle, and long black 

 bristles projecting forwards over the eyes ; the flat median scales show a 

 brighter brown tint in some lights ; palpi and proboscis black, the former 

 densely scaled ; antennae dark brown, basal joint deep ferruginous, base 

 of the second joint ferruginous. Scutellum with a line of white scales ; 

 pleuriB dark, with a few white dots. Halteres pale with dark knobs. 

 Legs brown, the mid and hind femora with distinct white apices, absent 

 in the foi-e legs, tibiae also with a white apical band, most prominent in 

 the hind legs ; ungues small, equal and siiuple. Length. — 1*8 to 2 mm. 



Habitat. — -Salisbury (4,000 ft.), Mashonaland. 



22. STEGOMYIA NIGRICEPHALA, Theobald. 



(Report Liverpool School Tropical Medicine, 1901). 



Wing veins densely clothed with dark brown scales. Tarsi 

 nearly black, unhanded. Abdomen black with small lateral, 

 basal white spots. Thorax, dark brown, with bronzy scales; 

 unadorned. Head, entirely black. Proboscis black, unhanded. 



5 . — Head black, entirely covered with flat black scales, clypeus, 

 proboscis and palpi black ; antennie dark brown, basal joint testaceous 

 on one side, dark on the other. Scutellum testaceous in the middle at 

 the base, black at the apex, lateral lobes greyish-brown, mid lobe with 

 flat black and grey scales and six (?) black "border-bristles" ; metanotum 

 blackish ; pleurae very dark with three large patches of white scales. 

 Legs nearly black, a little paler on the c6xie ; fore and mid tarsal claws 

 equal, but each with accessory tooth ; hind simple. Ventrally, the 



