( 194 ) 



The clayish pubescence varies in density in the individuals ; it is densest on 

 the scutellum and the sides of the sterna, aud on the npperside denser in the ? ? 

 than in the (?<?. 



Length, 17 — 31 mm. 



Six (?c?,four ? ?. 



6. Pachystola trituberculata thomensis spec. nov. 



? . Diflers from the East African form in the following points : pubescence of 

 occiput contiguous with eye, not forming a separate oblique line on each side ; 

 scutellum entirely ochraceons except a blackish brown line along the side-edges ; 

 basal carina of elytrum less elevate ; the four postmedian and median spots of the 

 elytra of the same fulvous colour as the proximal ones, the last of these four spots 

 of the same size as the first, the two lateral ones smaller. 



One ?. 



7. Frea puncticollis spec. nov. 



S ? . Black ; tomentnm of upperside thin, grey, forming small dots on the 

 elytra ; tomentum of frons, cheek, disc of pronotnm above lateral spines, and 

 of underside, clay-colour and dense; frons dispersedly but coarsely punctured 

 Vertical diameter of eye little shorter than cheek. Antenna of cj a little longer, of 

 ? a little shorter than the body, third segment longer than, fourth as long as the 

 scape, fourth with a distinct subapical groove ; tomentum sparse, not forming white 

 rino-s. Pronotnm coarsely punctured; side-spine prominent, curving backwards. 

 Scutellnm claj'-colour. Elytra very densely and coarsely punctured, almost rngate 

 at the base and shoulders; the latter elevate, obliquely truncate, tuberculiform 

 jiosteriorly. 



Prosternal process arched behind, vertical in front, transversely carinate. 



Legs uniformly clothed with a sparse grey jmbescence. 



Length, 15 mm. ; breadth (at shoulders), 7 mm. 



One c?, two ¥ ?. 



8. Plectonartliron microps spec. nov. 



?. Black ; tomentum greyish brown, markings of body ochraceons tawny. 

 Occiput with two large black patches. Eye smaller than in the same sex of 

 iliabolicum and subfasciatum. Third segment of antenna longer than fourth, densely 

 hairy beneath, like apical half of fourth. Pronotnm broader than long, shorter 

 than in subfasciatum ; three ill-defined, almost straight, ochraceons tawny vittae ; 

 l)uncturatiou as in subfasciatum. Scutellum trapeziform. Elytra more convex 

 before declivous end than in the other species, coarsely jiunctured ; sparse 

 ochraceons tawny ill-defined sjiots — one basal, longitudinal, dorsally of the 

 shoulder, an irregular transverse median band, aud on each elytrum a large 

 apical ring ; at the sides and on disc there are traces of some more spots. Sides 

 of sterna ochraceons tawny, with brown spots. 



Length, lu mm. 



One ?. 



