230 SJOSTEDTS KILIMANDJARO-MERU EXPEDITION. 8: 7. 



Length 17 mm. 



Meru low lands: Ngare na nyuki. January. 



The puncturation is weak, except on the sides of the mesonotum, which are broadly 

 and rather strongly punctured; the inetanotum is smooth, and its base forms a large 

 triangle in the centre, the sides being depressed and narrowed from the centre to the 

 sides. Clypeus with 3 strong keels down the centre, the space between the central and 

 lateral being depressed ; on eitherside of these, on the apex, is a row of short keels or 

 stout strise, widely separated. Labrum piceous. 



Allied to D. stigma, SAUSS. and D. capensis, SAUSS. ; both of these are much more 

 strongly, closely and regularly punctured all over, the former may further be known by 

 the apex of the wings being fuscous violaceous, the apical radial cellule being much 

 longer and narrower compared with the length, and the clypeus is closely, strongly striated 

 throughout; capensis has not the wings violaceous, but hyaline, slightly yellowish in front 

 at the apex of the costal and at the radial cellules, the nervures, too, being testaceous. 



Dielis erioiiotus, CAM. 



Black, the basal segment with a semicircular mark on the apex, and the other ab- 

 dominal segments, except narrowly at the base, rufo-ferrugineous, the anterior tibia 1 in 

 front and the basal and apical joints of the anterior tarsi, as well as the outer edge 

 of the tegula? lemon-yellow; the clypeus yellow, with a large black mark in the centre; 

 this mark is narrowed at the base and becomes gradually roundly dilated to the apex, 

 which is transverse and slightly, but distinctly, dilated laterally; the head, thorax, basal 

 segments of abdomen and the legs densely covered with pale cinereous, almost white, 

 pubescence; the other abdominal segments fringed with similar pubescence; spurs and 

 tarsal spines white; the wings hyaline, the nervures testaceous, the middle nervures 

 blackish, tf. - - Length 15 18 mm. 



Meru low lands: October. Usambara: Mombo. June. 



The apex of the radial cellule largely projects beyond the cubital cellule - - about 

 the length of the apical transverse cubital nervure. Head smooth, the mesonotum finely 

 and closely punctured. The size of the black basal bands on the abdomen varies, and 

 they become gradually narrower from the second to the apical segment. There is a yellow 

 line on the base of the mandibles. 



The Masai specimens do not differ materially from the types from Cape Colony. 

 Except as regards the size of the black basal markings on the abdomen the examples 

 do not show any variation. There seems to be an obscure yellow line on the apex at 

 the pronolum. I cannot guess what may be the $ of this species. It appears to be a 

 common one. It was described in the Trans. South Afric. Phil. Soc., XV, 211. 



Dielis dispilns, sp. nov. 



Black, the clypeus except for a large triangular mark in the middle, base of 

 mandibles, a line on the apex of the pronolum, narrow at the apex, broadly dilated on 



