1902.] Catalogue of the Colcoptera of South Africa. 669 



Hab. Cape Colony (Bathurst, Graham's Town, Port Elizabeth, 

 King William's Town, Somerset East). 



Eriesthis decora, n. spec. 



Black, with the elytra chestnut-red ; head and prothorax clothed 

 with comparatively short villose orange-yellow hairs covering the 

 greatest part of the surface, but along the margin there is a moderately 

 broad band of small yellow scales ; scutellum densely scaly ; elytra 

 very briefly and closely hairy and having a supra-marginal band of 

 very closely set, small orange scales continued along the apical part 

 and ascending along the suture where it unites with the lower of 

 two transverse bands of similar scales which are bi-interrupted on 

 each side, the basal part is also more or less densely scaly ; pro- 

 pygidium and pygidium clothed with yellow squamose hairs which 

 are less squamose and turn to greyish on the abdomen ; clypeus a 

 little obliquely attenuate laterally, more deeply emarginate and more 

 distinctly dentate laterally in the female than in the male, being 

 straight and reflexed in the latter ; maxillge armed with four short 

 teeth, the apical and basal of which are bifid ; inner claw of hind 

 legs small. 



This species can he distinguished from the other allied species by 

 the disposition on the elytra of the scales, which form a distinct 

 marginal band. 



Length 8^-9i- mm. ; width 5-5f mm. 



Hab. Cape Colony (Burghersdorp) ; Transvaal (Potchefstroom, 

 Boksburg). 



KOEISABA, n. gen. 



Mentum narrow, elongate, oblong in the posterior part, a httle 

 narrowed in the anterior, slightly emarginate at tip, lobes of ligula 

 broad ; upper lobe of maxillae robust, horny, rounded outwardly, 

 oblique inwardly, concave and armed with four strong teeth set 

 opposite each other ; inner lobe sharply dentate at the tip, apical 

 joint of labial palpi thick, swollen, pyriform, apical point of maxillary 

 palpi elongate, fusiform ; clypeus broader than long at the base, and 

 sub-dentate there laterally, slightly attenuate towards the apex, 

 where it is sharply tri-dentate ; prothorax diagonally narrowed 

 laterally from the apex to the median part, straight thence to the 

 base M^here it is broadly triangular ; scutellum moderately narrow, 

 elongate and sharply triangular; elytra much broader than the 

 prothorax owing to the great ampliation of the humeral parts, 

 gradually and strongly narrowed from there towards the apex ; 



