408 Annals of the South African Museum. 



but equal in width to the anterior part of the pronotum, transverse, 

 sinuate in the middle of the basal margin but with the angles 

 straight ; eyes oblong, moderately large, very little incised inwardly, 

 space behind the eyes long ; mandibles not very large, acuminate, 

 simple laterally at the base ; antennae not very robust ; second joint 

 very small ; thorax gradually ampliated laterally from the outer 

 angles of the pronotum to the tegulse which are very long and 

 comparatively narrow, suture of the pronotum very highly carinate ; 

 mesonotum moderately convex and having in the centre a very 

 distinct longitudinal raised line ; scutellum very highly convex, 

 globose, all these three parts of the thorax are broadly, deeply, and 

 irregularly pitted. Metanotum short, rounded laterally, gradually 

 sloping, broadly reticulate with the walls very highly raised and 

 sharp, it has in the centre a longitudinal broad smooth groove, 

 the walls of which are very sharp ; abdomen sessile, the segments 

 finely aciculate with the exception of the last and of the second, the 

 latter is broadly foveate above and below, where there is a con- 

 spicuous smooth longitudinal median keel reaching from the base to 

 past the median part, the keel of the first segment is short, emargi- 

 nate, and vertically truncate ; the last segment is clothed with 

 greyish hairs and is deeply pitted and has no pygidial area ; spurs 

 white, hind legs not spinose ; radial cell elongated, not truncate at 

 apex, three cubital and two recurrent nervures. 



Length 17i mm. ; width (winds expanded) 28 mm. 



Not unlike in general appearance but not in markings M. 

 guineensis (sycorax, Sm.), especially in the colouration of the 

 wings. 



Hab. Northern Ti-ansvaal, H. Fry. 



Gen. METHOCA, Latr. 

 Methoca concinna, n. sp. 



$ . Black, shiny, with the whole thorax ferruginous red, tibiae 

 and tarsi rufescent, the mandibles and the three first antennal 

 segments are also rufescent. Covered with a greyish pubescence, 

 which does not however hide the teguments, the latter are very 

 shiny. 



Head plainly transverse, being on the vertex nearly twice as broad 

 as long ; it is, however, deeply sinuate at the neck, and the hind 

 angles are somewhat rounded ; the space behind the eyes is long ; 

 the surface is covered with closely set round punctures, there are no 

 traces of a median longitudinal cai'ina in the frontal part ; the ocelli 



