216 Annals of the South African Museum. 



antennal joint is one-half longer than the penultimate. Body and 

 legs densely covered with silvery pubescence. Abdomen sessile ; 

 its apical half densely punctured. Mesonotum trilobate, the 

 parapsidal furrows being distinct. 



Comes near to Rhynchochalcis, which may be known by the 

 untoothed femora, by the scutellum being bilobate, by the frontal 

 depression enclosing the anterior ocellus, and by there being a keel 

 between the antennae. The ovipositor is more distinctly separated 

 from the abdomen than usual with the Chalcididince, being more as 

 in the Torymince, that is to say the apical segments do not enter 

 into its structure. I have included in the genus one species 

 (C. bicornutus), in which the vertex is armed with 2 teeth 

 or horns. 



Cbatocentrus argenteopilosus, sp. nov. 



Black, densely covered with silvery pubescence, which is much 

 longer on the median segment than elsewhere, the apical half of the 

 pronotum, the greater part of the mesonotum and scutellum dark 

 red; the basal half of abdomen and the legs of a brighter red colour; 

 the outer side of the hind femora darker coloured ; the coxai are 

 densely, the rest of the legs are more sparsely pilose. Wings 

 hyaline, infuscated along the margin, the nervures deep black. 5 . 



Length 8 mm. ; terebra 4 mm. 



Cape Colony. Dunbrody. 



Head rugosely reticulated-punctured, the sculpture almost hid by 

 the dense pubescence. Frontal depression deep, narrower than the 

 space between it and the eyes, closely, finely, transversely striated, 

 stoutly keeled down the middle. Pro- and mesonotum and scutellum 

 coarsely reticulated ; the apical slope of the scutellum is oblique, 

 stoutly longitudinally striated and with a distinctly raised margin 

 which is broadly rounded. Median segment short, the centre steeply 

 sloped, finely striated; the sides are more strongly striated. Pleurae 

 rugose, densely covered with longish, silvery pubescence ; the lower 

 basal half of the mesopleurae striated, depressed. 



■■'- Cbatocentrus buficornis, sp. nov. 



Black; the base of pronotum narrowly, its apex broadly, scutellum, 

 mesopleuras narrowly below the tegulae, base of abdomen above and 

 more broadly below, rufous ; legs rufous ; the outer side of hind 

 femora, except on the top, black. Wings hyaline, the apical half 

 largely suffused with fuscous-violaceous, the nervures black. 5> 



