( 519 ) 



central longitudiual space, labniiu piceous, palpi dark fulvou.s, antennae scarcely 

 extending to the middle of the elytra, black, the lower six joints fulvous ; tliorax 

 short, more than twice as broad as long, the sides evenly rounded, the surface convex, 

 coarsely and closely jmnctnred, the interstices reticulate and jjartly confluent, anterior 

 angles in shape of a small tooth, furnished with a single hair ; scutellum slightly 

 broader than long, its apex rounded, cupreous, finely punctured ; elytra convex 

 without basal dejiression, less stnnigly punctured than the thorax, the punctures 

 arranged in irregular close rows near the suture, the interstic(^s at the sides trans- 

 versely rugose, close to the lateral margin is a smooth slightly raised costa from the 

 middle to the apex ; humeral callus smooth, prominent ; underside and the base of 

 the femora, metallic green, legs cupreous ; ])rosternum broader than long, finely 

 ])un<-lure<l, the base clothed with whifish j)ubescence. 



Hdh. Gaboon. 



To be separated from its African congeners, notably from C. aeutellatum Lefev., 

 by the strong punctuation of the thorax, colour of the upper surface and legs. 



Syagrus bipunctatus Weise. 

 Atypical specimen and an aberration without the two thoracic black spots from 

 Knilu, as well as a similar variety from Gaboon in my collection is before me. The 

 specimens agree with the author's description in the main points, but the apical five 

 or six joints of the antennae in all the specimens are black, of which Weise says 

 nothing ; the author also describes the thorax as a little broader than long, in my 

 specimens this part is at least half as broad again as long. Altogether this species 

 has not the subcylindrical shape of S. calcaratus Fab., but is broader and more 

 flattened and the ocular sulcus is scarcely perceptible. 



Scelodonta costata sp. nov. 



Obscure aeneous below, above metallic greenish, terminal joints of antennae 

 Lroadly compressed, thorax transversely rugose, elytra rugosely punctured, with four 

 strongly raised longitudinal costae. 



Length 3 lines. 



Head finely rugose throughout, the eyes surrounded by a very deej) sulcus, 

 <dypeus bidentate in front, antennae with the terminal six joints broadly dilated, 

 obscure dark purplish, the basal joint greenish ; thorax subcylindrical, much 

 broader than long, widened at the middle, the sides rounded at the base, the entire 

 surface covered with fine transverse rugosities ; scntellnm jjentagonal, distinctly 

 punctured; elytra metallic green, deeply and closely punctured between the costae, 

 the latter at equal distances, purplish, strongly raised and nearly joined at the apex, 

 legs aeneous, femora with a small tooth ; entire underside covered with slun-f scaly 

 pubescence. 



Hab. Kuilu. A single specimen. 



Rhembastus costatus sj). nov. 



Fulvous, the apical joints of the antennae black, thorax obscure aeneous, 

 strongly and remotely punctured, elytra obscure fulvous, the sutural and lateral 

 margins obscure aeneous, longitudinally costate, the interstices closely punctate- 

 atriate ; femora with a minute tooth. 



Length 2 lines. 



