82 Transactions South African Philosophical Socictij. [vol. xii. 



semicircular, deeply incised in front with the angles of the incision 

 dentate, suture of genee very fine ; first joint of antennae as long as 

 the five following ; prothorax convex, aculeate laterally before middle, 

 carinate all round ; elytra convex, finely striate, with the intervals 

 foveolato-punctate and slightly granular, and having a sharp supra- 

 marginal ridge reaching from the base to the lateral rounding of the 

 apictl part ; legs long, anterior tibiae strongly tri-dentate, sharply 

 serrate outwardly, and having a strong inward tooth and no tarsi ; 

 intermediate and posterior tibiae a little incurved and having two 

 setulose carinse on the upper side, joints of tarsi short, triangular, 

 basal one not longer than the following one, claws moderately 

 strong ; metasternum broad between the coxae, edged at tip by a 

 semicircular ridge; cotyloid cavities slightly diagonal; pygidium 

 perpendicular, either rounded or aculeate at apex, and produced 

 underneath in a more or less elliptical smooth process fitting 

 against a deep emargination of the last abdominal segment in 

 the male ; in the female the pygidium is normal and not recurved 



at apex. 



Chalconotus are bronze or coppery-bronze convex insects havmg 

 the same habits as Scarahoius and Gumnoplcurus. The genus is an 

 African one, occurring on the West and East Coast, as well as in 

 Central Africa. 



Synopsis of Species. 



Pygidium rounded at apex in the male and with the apical margin 

 very little recurved 



Pv^idium aculeate at apex in the male and with the apical margin 



, ""i „n spectabilis. 



strongly recurved ^ 



Anachalcos convexus, Boheni., 



Plate XXXVIII,, fig. 3. 



Insect. Caffr., ii., p. 196. 

 Bronze with a coppery sheen on head and prothorax; clypeus 

 scooped out in the centre and with the angles of emargination 

 sharp and dentiform, closely punctate with the punctures fine but 

 deep ; prothorax convex, anterior margin deeply l^i-sinuate and with 

 the angles very sharp, outer margin diagonally ampliated from the 

 anterior angle to a little more than one-third of the length, attenuate 

 from that angular part towards the base, but a Httle emarginate 

 under the lateral impression, the median part is covered with 

 closely set punctures, but the sides are somewhat foveolate and 



