566 Annals of the South African Museum. 



thicker than in capensis, Mayr. The oval head, moderately emarginate 

 behind, has the same shape as in capensis. The scape extends beyond 

 the back of the head by about one-fourth of its length, the 2nd joint 

 of flagellum is hardly half as long again as wide, the other joints 

 longer. The pronotum, as in ccvpensis, is not strongly arched. The 

 constriction of the thorax is distinct, stronger than in capensis. The 

 epinotum has two cones rounded at the apices and directed steeply 

 outwards, upwards and backwards. The scale of the petiole has 

 two pointed teeth above and is arcu^fcely emarginate between them. 

 " Durban (Brauns)." 



7 



A. SUBMETALLICA, n. Sp. 



^ . 3"2-3 - 8 mm. Black, femora blackish-brown, tibiae brown, 

 tarsi brownish-yellow, flagellum brown, scape dirty ochreous, be- 

 coming brown towards the apex. Head and thorax with a greenish 

 metallic lustre, not very pronounced, abdomen with a very evident 

 violaceous or steely blue lustre. Pubescence present on the clypeus, 

 lower surface of the head, legs and antennae only, fine and decumbent. 

 The pilosity consists of long, thin, erect and white hairs, most abundant 

 on the abdomen, absent from the legs and antennae. Legs dull, the 

 whole body shining, especially the abdomen. Head almost smooth, 

 at the most only microscopically reticulate. Pro-mesonotum very 

 finely reticulate above or sometimes smooth, also with a few small 

 piligerous punctures. Metanotum with 3 or 4 sti*ong longitudinal 

 rugae between the stigmatic tubercles ; epinotum striated on the 

 inner half of the lateral cones, the striae curving outwards posteriorly. 

 Sides of meta- and epithorax longitudinally striate. Petiole and 

 abdomen smooth. Head a little longer than wide, subovate, con- 

 siderably narrowed in front, the posterior margin feebly concave, the 

 posterior angles widely rounded. Clypeus carinate in the middle. 

 Mandibles almost smooth, 5-dentate. Eyes large, placed at about 

 the middle of the sides ; ocelli vestigial. Antennae long ; the scape 

 extends beyond the back of. the head by one-third of its length. 

 1st joint of flagellum as long as the 2nd and 3rd together, all the 

 joints longer than wide. Pronotum distinctly flattened above and 

 sloping forwards, two-thirds wider than long in the middle (excluding 

 the neck). Pro-mesonotal suture deep. Mesonotum convex, large, 

 as wide as long, at least twice as long as the metanotum. Meso- 

 metanotal suture feeble. Dorsum of epinotum convex longitudinally, 

 divided by a deep median groove into two lateral cones, divergent and 

 ending in subdentiform points ; declivity oblique, longer than the 



