332 Annals of the South African Museum. 



Hab. Southern Rhodesia (Salisbury), Father J. O'Neil. 

 Allied to S. clelia, Per., in which however the white dorsal and 

 lateral part of the thorax is red. 



GEN. MYBMILLA, Wesm. 



MYRMILLA MAHLALELA, sp. n. 



$ . Black, with the thorax red, and the vertex and labrum 

 occasionally red, abdomen with a flavescent median band the hind 

 border, a small central patch at base of the second segment and another 

 larger one in the centre of the apex, third segment clothed with an 

 entire band, fourth with a median patch of the same colour and the 

 segment densely penicillate with flavescent hairs. Head very large, 

 quadrate, nearly as long as broad, eyes very large, lateral, genae as 

 long as the eyes, obtusely rounded, closely striolate on the vertex, 

 and with a median, not very distinct longitudinal central carina, 

 labrum rufescent, mandibles greatly developed, surface very briefly 

 pubescent yellow, and sparingly setose ; antennae with the scape 

 rufescent or sub-rufescent occasionally, the two first joints are also 

 rufescent. Third joint more than twice as long as the fourth. 

 Thorax one-third longer than broad, sub-parallel laterally, but 

 slightly wider at the base than at the apex, the basal margin of the 

 pronotum slopes slightly on either side, but is sharply angular, 

 the lateral margin bears 5 short teeth including the one at the basal 

 angle, and the hind border has three long, equi-distant, horizontal 

 spines, the surface is foveolate striolate, very briefly pubescent 

 flavescent ; abdomen sessile, briefly pubescent black, and with 

 whitish flavescent setae, the segments are very finely and closely 

 punctate ; legs fuscous or fuscous rufescent, tibiae strongly spinose, 

 spurs whitish. 



Length 6-6i mm. 



Hab. Southern Ehodesia (Bulawayo, Salisbury), Father J. O'Neil. 



$ . Similar to the female in colouring and markings of the 

 abdomen. The head is equally large in proportion to the thorax, 

 the latter however is strongly contracted laterally, the metanotum is 

 ampliate rounded on the sides and distinctly wider than the 

 pronotum, there is no lateral denticulation, but the hind angles 

 are distinctly spinose, and there are three spines similar to those of 

 the female on the apex of the declivity; the hind legs are spinose 

 and the long spurs white. 



Length 5i mm. 



Hab. Southern Ehodesia (Salisbury), Father J. O'Neil. 



