44 Annals of the South African Museum. 



? Thorax nearly parallel, briefly incised and tridentate in the 

 middle ; first abdominal segment straight laterally ; tibise with one 

 row of spines tisiphonc. 



? Thorax subparallel laterally, but a little narrowed from the 

 median part to the declivity, serrulate and not incised ; band on 

 second segment narrowly interrupted in the centre ; tibise with a 

 double row of spines chionc. 



? Thorax subparallel laterally for three-fourths of the length, 

 and with a conspicuous ante-median tooth, a little narrowed 

 towards the base, and with the lateral angles produced in a long, 

 sharp, conical tooth clotho. 



a 1 . Second and third segments with a lateral patch. 



? Thorax subparallel and slightly incised and serrate laterally ; 

 band on the second segment reduced to two apical patches on each 

 side of the median part megacra. 



(MALES.) 

 FIRST DIVISION. 



BASAL ABDOMINAL SEGMENT LONG OR VERY LONG, NODOSE AT 



APEX. 



A 3 . DORSAL PART OF ABDOMINAL SEGMENTS HAVING APICAL 



BANDS OP WHITE OR ORANGE HAIRS, BUT NO MEDIAN 

 PATCH ON THE SECOND SEGMENT. 



a 3 . First abdominal segment long, petiolate. 



b 3 . First segment banded, bands not interrupted. 



Prothorax and mesothorax red ; metathorax black, subquadrate ; 

 second abdominal segment with two diverging carinse mncmosidcs. 



b-. Two basal segments banded. 



b l . The three basal segments banded. 



Prothorax, dorsal part of mesothorax and scutellum red ; basal 

 segment of abdomen very broadly petiolate maja. 



First abdominal segment very long and slender in the male, mode- 

 rately long in the female. 



Thorax entirely red, with the pectus black ; tibise with a double 

 row of slender spines byblis. 



Thorax black with the dorsal part and sides of the prothorax, 

 the dorsal part of the mesothorax and the scutellum red ; tibiae 

 without spines phi/lira. 



Thorax black with the dorsal part of the mesothorax and the 



scutellum red. 



