40 



Annals of the South African Museum. 



-helle. 



? Head broader than the thorax, red with the anterior part\ 

 black, abdominal bands bright orange [ , 



cf Black, with the prothorax and mesothorax, scutellum and [ 

 tegulas red ; mesothorax with two conspicuous longitudinal grooves J 



? Head extremely large, mandibles very long, and with a long, 

 sharp, incurved tooth on the superior and inferior margin at about 

 the median part ; thorax very sharply angulate in the anterior part, 

 and bisinuate laterally, posterior angle also angular 



<? Head not so broad as thorax, transverse quadrate ; body black, 

 with the exception of the metathorax, scutellum, and tegulse, which 

 are red 



5. The three first basal segments of abdomen banded, band of 

 the second abdominal segment emarginate in the anterior part, or 

 interrupted in the centre. 



? Thorax broadest in the anterior part, incised at about one- 

 fourth of the length, subparallel from there to the posterior 

 declivity ; abdominal bands yellow, apical band of the second 

 segment emarginate in the centre 



bcrcnice. 



? Thorax very sloping diagonally on each side at apex, sub- 

 parallel laterally for two-thirds of the length, and ampliated in the 

 posterior part for the remaining third ; abdominal bands white, the 

 one on the second segment incised in the middle in the shape of 

 a V purpurata. 



? Thorax truncate at apex, parallel or nearly so laterally for half 

 the length, gradually ampliated from there to the declivity which 

 is perpendicular, with the upper margin and the sides distinctly 

 denticulate ; central part only of apex of first segment banded, 

 second segment with two nearly coalescent patches in the middle, 

 band on third segment non-interrupted antiope. 



a 4 . Bands on the second and third segments interrupted in the 

 centre. (No female.) 



a 3 . The four basal segments of abdomen with non-interrupted 

 bands. 



? Thorax gradually narrowed from apex to base, very slightly 

 sinuate in the middle, truncate behind with the sides of the- 

 declivity not serrate ; tibiae non-spinose taygcte. 



a-. The four intermediate abdominal segments with a non-inter- 

 rupted band, basal and apical ones without. 



? Thorax gradually narrowed laterally from apex to base, where 

 it is less broad by one-fourth, a rounded projection a little before 

 the median part ; abdomen pyriform ; tibite without spines . . 



melctc. 



Thorax subparallel, a little broader at base than at apex, not 

 emarginate laterally ; abdomen pyriform ; tibiae spinose ariadna. 



a 1 . The five basal segments of abdomen with a non-interrupted 

 band. 



