90 Annals of the South African Museum. 



Face and clypeus thickly covered with longish white pubescence, 

 as is also the eye incision. Front and vertex opaque, alutaceous ; 

 the former keeled in the middle. Mesonotum closely rugose ; the 

 scutellum flat, finely coriaceous. Metanotum finely rugose, thickly 

 covered with white longish pubescence ; an ii-regular, semicircular 

 area on either side at the base ; the centre closely transversely 

 striated; the middle with two longitudinal keels diverging at the apex. 

 Apical half of propleuree strongly, obliquely striated ; upper half 

 and apex of mesopleurae less strongly longitudinally striated ; there 

 is a longitudinal, oblique keel above the middle of the metapleurae ; 

 the part above it is closely, rugosely punctured, below irregularly 

 obliquely striated, the striae clearly separated ; the base above 

 has a keel running from the top to below, and having a few 

 striae forming areae inside it. 



The recurrent nervure is received almost the length of the 

 transverse cubital nervure beyond the latter ; there are two basal 

 cells in the hind wings, the anterior being the larger. Antennas 

 shorter than the abdomen. Post-scutellura keeled in the middle. 

 Antennae stout, shorter than the abdomen. 



As in ? T. brevipennc, I cannot find any pubescence on the eyes. 

 The two may be easily separated : — 



The second to fifth segments black ; post-scutellum not keeled ; 

 the keels on the base of metanotum straight on the inner side, 



forming an area of equal width hrevipennis. 



The second to fifth segments rufous ; post-scutellum keeled ; the 

 keels on base of metanotum oblique, the area consequently 

 widest at the apex cariniscutu. 



ODONTAGEYPON, gen. nov. 



Transverse median nervure in hind wings not broken. Parallel 

 nervure received near the top, the discoidal cellule therefore much 

 narrowed at the base, not half the width of its apex. Transverse 

 median nervure received shortly beyond the transverse basal ; the 

 recurrent nervure received shortly beyond the transverse cubital. 

 Apex of clypeus rounded, its middle armed with a short, but 

 distinct tooth. Front keeled in the middle. Parapsidal furrows 

 obsolete. Scutellum roundly convex, keeled laterally at the base. 

 Apex of median segment prolonged into a point ; the spiracles about 

 three times longer than wide. Hind spurs longer than the width of 

 the apex of the tibiae. Antennae not much shorter than the body. 

 Hind tarsi not much thickened ; the claws not pectinated. Basal 

 joint of the hind trochanters twice the length of the apical. 

 Mandibular teeth unequal, the upper larger than the lower. 



