294 Annals of the South African Museum. 



is apparently hinged along a narrow transverse crease. This inter- 

 pretation is supported by the presence on the inner anterior aspect 

 of the antennal bands of a curious knot-like projection which fits 

 into a socket-like modification of the signature. The signature is 

 thus characteristically hollowed on both sides (cf. Giebelia and 

 M. dimorphd). 



Thorax. Prothorax much broader than long, sides rounded and 

 heavily thickened, 2 minute bristles anteriorly on the dorsum. 



Metathorax bears, like the prothorax, 2 minute bristles anteriorly 

 on dorsum ; sides divergent, much thickened ; posterior margin 

 rounded over abdomen. At the posterior angle and for some dis- 

 tance along the edge a row of pustulated hairs 6 in all on each 

 side. The pustules are regularly disposed, but from its position the 

 hair at the corner diverges more than the others, which thus come 

 to form a row by themselves. Median region of hind margin clear. 

 On the sternum the chitinous ribs between the coxae are strongly 

 developed. Prosternurn bare, metasternum 4 hairs, 2 between mid- 

 coxae, 2 between hind coxae. 



Abdomen. The dorsal bands are continuous on all the segments, 

 being broad on 1, 2, 3-8, and narrowed medianly on the others. 

 The minute terminal segment is uniformly brown. In shape the 

 abdomen is elongated oval. The margin is distinctly toothed from 

 the overlapping of the segments. 



The lateral bands, except on the first segment, are strongly 

 developed ; on the under surface they are clearly defined, but above 

 they are less plainly limited owing to fusion with the transverse 

 markings of the tergites. Each band shows an almost rectangular 

 median appendage. There is also a thickening of the band along 

 the inner anterior edge to form a second minor appendage which 

 more or less enters the previous segment. The number of hairs on 

 the lateral bands ranges up to 4 (below) and 2 (above), reckoning, as 

 on the band, all hairs outside the stigma. The maximum of G is 

 found on segment 7 ; 1-2 of these hairs project at the angle. 



The first abdominal segment differs from the others (2-7) in being 

 slightly narrower (i less), in the presence of 2 minute hairs 

 anteriorly in the middle of the tergite (cf. thorax) and of 1 hair on 

 each side at about J from the posterior angle, and also in the 

 reduced thickening of the sides which show no median appendage. 

 Two median hairs on hind border. 



Tergites 2-8 are sub-equal in length, with large stigmata on 2-7. 



The 2nd tergite bears 2 median hairs on hind border. The 

 3rd-5th bear 3-4 median hairs and 1 on each side before the 



