1899.] PHYTOPHAGOUS COLEOPTERA OF AFRICA. 351 



species. Mr. Marshall states that it was found on Acacia liorrida, 

 which seems to be frequented by a great number of other Phyto- 

 phaga. 



Ch^tocnema marshalli, sp. n. 



Dark aeneous ; the antennae very long, more or less fulvous as 

 well as the four anterior tibiae and tarsi ; thorax finely and closely 

 punctured ; elytra deeply puuctate-striate, the interstices slightly 

 convex, impunctate. 



Length 3| miUim. 



Of elongate, posteriorly pointed shape, the vertex of the head 

 rather strongly punctured above the eyes, the latter with a rather 

 deep sulcus near their inner margins, which runs obliquely to the 

 clypeus, this part rugosely punctured as well as the space in front 

 of the eyes at the sides of the clypeus ; antennae slightly extending 

 beyond the apex of the elytra, filiform, fulvous, the terminal joints 

 sometimes darker, the second joint half the length of the first, the 

 following ones very elongate ; thorax rather more than twice as 

 broad as long, the sides slightly rounded, the anterior angles some- 

 what prominent and obliquely thickened, the posterior margiix 

 accompanied by a finely impressed line, the surface transversely 

 convex, finely and closely punctured ; scutellum twice as broad as 

 long, impunctate ; elytra pointed posteriorly, with deep rows of 

 transversely shaped punctures, the interstices raised and slightly 

 punctured here and there ; underside dark aeneous, the abdomen 

 finely punctured at the base of each segment, sparingly pubescent ; 

 posterior femora strongly incrassate, impunctate ; tibiae fulvous 

 at the base, the four posterior ones armed with a stout tooth ; 

 tarsi fulvous ; prosternum narrow, sulcate longitudinally ; last 

 abdominal segment with a short transverse ridge at the apex 



Hah. Malvern, Natal {0. Marsliall). 



The long antennae, which extend beyond the elytra, will at once 

 distinguish this species ; in this respect it agrees with C. longi- 

 cornis Jac, likewise from Natal, but that species is much smaller 

 and has still longer antennae, the thorax is finely rugose, and the 

 legs are nearly black. Some specimens of Q. marshaUi are of a 

 more opaque dull bluish colour, but I cannot find sufficient difl^er- 

 ences to justify a separation ; in the female the antennae are shorter, 

 but still as long as the body. 



Cn^TOCisrEMA febreensis, sp. n. 



Below piceous, above dark aeneous, basal joints of the antennae 

 and the tibiae and tarsi more or less fiavous ; thorax very closely 

 and finely punctured : elytra strongly punctate-striate,^ the inter- 

 stices longitudinally costate near the apex, the latter pointed. 



Length 2 millim. 



Head impunctate, with the exception of a single deep puncture 

 above the eyes, the sides with narrow oblique grooves which meet 

 in front ; clypeus broad, impunctate ; the antennae not extending to 



