46 Annals of the South African Museum, 



A 5 . ABDOMINAL SEGMENTS WITH BANDS BUT NO SPOT. 

 a 6 . The third abdominal segment with an uninterrupted band. 



<? Black, clothed with a dense, dark pubescence, flavescent on 

 the head and prothorax, scutellum produced behind in a horizontal, 

 dentiform process on each side, apical part of the first segment and 

 the whole of the third clothed with a white silky band ; ventral 

 part of second segment with three cannae acidalia. 



Basal segment without any band. 



c? Black, first and second segments of abdomen red, edged with 

 a narrow apical black border, third segment with a white band ; 

 ventral carina of first segment produced in a vertical spine at apex ; 

 prothorax clothed with a white pubescence, metathorax not 

 pubescent cloantha. 



Prothorax not clothed with a white pubescence, metathorax 

 densely pubescent at base tyro. 



Prothorax with a white pubescence, ventral carina not spinose, 

 the two basal segments with an uninterrupted band spcculatrix. 



c? Black, with the mcsothorax and scutellum brick-red, apical 

 band of the second segment very narrow licrmionc. 



a*. The three basal segments with an uninterrupted band. 



cT Black, with the metathorax red, prothorax with a dense 

 greyish band, ventral part of the abdominal segment with a sharp, 

 median ridge reaching from the base to the median part ; eyes not 

 emarginate applets. 



Totally black, eyes deeply emarginate, joints of antennas thick, 

 subserrulate cinchrcis. 



c'. Band on the second and third segments interrupted in the 

 middle. 



Black, tegulse red, bands orange-yellow hippolythe, 



A 4 . ABDOMINAL SEGMENTS BANDED, SECOND SEGMENT WITH A 



MORE OR LESS OVATE SPOT. 



a-. The three basal segments banded. 



Black, with a white band on the prothorax, the ovate spot on the 

 second segment broad, median and basal nyctimcnc. 



A 3 . ABDOMEN WITH TWO MEDIAN SPOTS ON SECOND SEGMENT. 



d". Third abdominal segment banded. 

 c,-. Band not interrupted. 



