A Contribution to the Knowledge of South African Mutillidce. 367 



another. The following synoptic table might help in distinguishing 

 the species : 



A 2 . MESOTHOBAX PRODUCED BEHIND ON EACH SIDE 



IN A HORIZONTAL DENTIFORM PROCESS ; FIRST VEN- 

 TRAL SEGMENT WITH A LAMINATE CARINA NOT 

 TOOTHED AT APEX, SECOND SEGMENT WITH A VERY 

 DISTINCT VENTRAL CARINA. 



a 2 . Prothorax clothed with flavescent or yellow 

 hairs. 



b" 2 . Mesothorax with two longitudinal grooves. 



Third abdominal segment with a white pubescent 

 band acidalia, Per. 



No white band on any of the abdominal segments autonoi 1 , Per. 



Apical part of second segment and the whole of 

 third and fourth orange-yellow meliccrta, Sm. 



a 1 . Prothorax not clothed with flavescent hairs. 

 b\ Mesothorax with no longitudinal groove. 



Second and third abdominal segments with a lateral 

 white patch godefrcdi, Sich. & Radoz. 



Apex of second and the whole of the third segment 

 white corypliasia, Per. 



A 1 . MESOTHORAX NOT PRODUCED BEHIND, FIRST VEN- 

 TRAL SEGMENT TOOTHED AT APEX, SECOND SEG- 

 MENT WITHOUT A VENTRAL CARINA. 



Third abdominal segment with a white band, inter- 

 rupted longitudinally in the middle creilsa, Per. 



MUTILLA CORYPHASIA. 



df . Totally black, and clothed with long black hairs densely set, 

 apical part of the basal and second segment fringed with a silky 

 white pubescence ; head transverse, twice as broad as long on the 

 vertex, sides straight, eyes large, not emarginate, projecting, reaching 

 to about the median part of the outer side, very roughly punctured 

 and clothed with densely set long black hairs without any admixture 

 of white ones ; prothorax scrobiculate, mesothorax without any longi- 

 tudinal grooves, produced behind on each side in a dentiform, slightly 

 grooved, horizontal process, scutellum rounded, raised, metathorax 

 sub-elongato-quadrate, posterior angles bluntly rounded ; tegulae 



