422 Annals of the South African Museum. 



sandrus, but in which the fore tibiae in addition to the apical spine 

 are armed with two conspicuous ones in the inner part of the upper 

 side. The resemblance of the species known to me, which are all 

 females, to female examples of Libanasidus and Libanasa is very great. 

 The antennae are equally long. Onosandrtts iincticeps, Pict. & Saus., 

 will have to be included in this genus. 



ONOSANDKIDUS DECEPTOR, n. sp. 



$ . Fuscous aenescent ; head livid flavescent, darker in the middle of 

 the vertex, maxillae rufescent, black at apex ; vertex and genae vaguely 

 punctulate, the latter plicatulate in the anterior part, f astigium plainly 

 carinulate laterally ; antennae fuscous ; pronotum fuscous, with a faint 

 rufescent tinge, vaguely plicatulate and with a distinct median longi- 

 tudinal line ; abdomen finely aciculate, subaeneous, styles long, ovi- 

 positor upcurved, as long as the abdomen, and sub-genital lamina 

 truncate, slightly emargiuate ; legs somewhat robust, the spines on the 

 inner upper side of the anterior tibiae are long, the first one is situated 

 at about one-third of the length from the base and the second 

 slightly past the middle ; on the intermediate tibiae these spines 

 number three and three on one leg, but the number is normal, i. e. 

 three and four, on the other, the well developed hind femora are 

 simple underneath, the tibiae, provided with sharp spines, are only 

 slightly shorter than the femora. Resembles the female Platysiagon ; 

 but the tibiae, especially the hind ones, are more robust and the spines 

 longer and stronger. 



Length of body 23 mm.; of pronotum 7 mm.; of hind femora 

 19 mm.; of hind tibiae 18 mm.; of ovipositor 16 mm. 



Hab. Southern Rhodesia (Umtali), A. Bodong. 1 $ . 



ONOSANDRIDUS PICTIFRONS, n. sp. 



? . Head with the vertex red, anterior part black with a conspicuous 

 yellow band continued from the apex of the fastigiuin to the edge of 

 the clypeus, genae, labrum, mandibles and palpi flavous ; vertex dis- 

 tinctly grooved longitudinally in the middle ; antennae concolorous, 

 flavescent ; pronotum fuscous with a posterior transverse flavescent 

 band edged Avith a black band of nearly equal width, the other 

 segments either similarly banded or banded on the sides only, the 

 surface nearly smooth; legs pale flavescent with the knees black, 

 upper edge of femora and folds black ; anterior tibiae with two sharp 

 conspicuous spines in the inner part of the upper side in addition to 



