( 136 ) 



Head punctured at anterior margin ; mesial sulcus narrow between autennal 

 tubercles, not deeply impressed, no distinct sulcus on occiput ; distance between 

 upper lobes of eyes equalling diameter of base of third autennal segment. Antenna 

 a little longer than the body, third segment a very little longer than fifth. 

 Prothorax half as long again as broad, irregularly plicate, the wrinkles more or 

 less longitudinal in middle, forming anteriorly a kind of irregular double carina. 

 Scutellum triangular, black. Elytra rather densely jjuuctured at base, thepuuctura- 

 tion becoming sparser behind and disappearing before apex ; the latter rounded, 

 subtruncate, sutural angle obtuse, not dentate. Prosternal process sulcate, arched, 

 apex somewhat convex, but not tuberculate. Metasternum very finely and densely 

 punctured. Carinae of femora distinct ; hindfemur reaching to apex of third 

 abdominal segment. 



We have two ? ? from the Johanu Albrechts Hohe, North Cameroons (L. 

 Conradt), and a c? and a ? from Benito, French Congo. In this c? the elytra are 

 not so distinctly dilated before the apex as in the type. 



12. Derolus cinctus spec. nov. 



? . Similar to (Jilatatus, but difl'ers obviously in the following points : pubescence 

 grey and sparse above and below, prouotum practically naked ; antenna shorter than 

 the body ; prothorax nodose at sides just behind middle, here not plicate or 

 punctured, the nodosity limited above by a sharply marked longitudinal groove, 

 wrinkles of disc not prominent, obsolescent in front, two obliijue discal grooves 

 converging behind, reminding one of aix-i/erus ; elytra shorter than in i/ilatatus, 

 with a broad, ill-defined, black postmedian band, which is produced forward at suture 

 and at lateral margin ; process of presternum raised into a tubercle behind ; 

 metasternum and abdomen smooth, glossy, with dispersed punctures, sides of 

 abdomen more densely punctured, first and second segments black, the others red 

 like breast, the black belt corresponding to the band of the elytra ; legs stouter 

 than in dilatatiis. 



Length, 13 mm.; elytra, 8 mm.; breadth, 3i mm. 



Hab. Benito, French Congo. 



One ?. 



13. Derolus kraatzi spec. nov. 



Pitchy black, antenna, mandible and legs brick-red, femora brown, except base; 

 pubescence silky, grey, slightly yellowish, dense on scutellum and metasternal 

 episternum, and forming two narrow, transverse bands on elytra, the first before 

 middle, irregular, produced frontad at suture, the second before declivous apex. 



Frons short ; interantennal sulcus narrow and not deep, extended on to occiput, 

 where it is very thin. Antenna a little longer than the body ; third segment not 

 ([uite half as long again as fourth, and a little longer than fiftlu Prothorax about 

 as long as broad, strongly and evenly rounded at sides from basal to apical 

 constriction, not plicate, except posteriorly in middle where there are traces of folds, 

 a sharply marked sulcus on each side of disc parallel with the lateral outline of the 

 thorax ; mesial line slightly raised behind. Elytra punctured from base to near 

 apex ; tlie latter ronnded, sutural angle obtuse. Prosternal process narrow, sulcate, 

 almost horizontal, not tubercled. Metasternum and abdomen very densely and 

 minutely punctured. Carinae of femora distinct ; hindfemur reaching to base of 

 fifth abdominal segment. 



