1907.] Catalogue of the Colcoptera of South Africa. 359 



the median part which is grooved longitudinally ; anterior tibiae tri- 

 dentate, the upper tooth small, but very distinct. 



Length 12 mm. ; width 7 mm. 



Hob. Cape Colony (Ladysmith). 



Gen. TEICHOSTETHA, Burm., 

 Handb. d. Entomol., hi., 1842, p. 398. 



Mentum very broadly dilated laterally from the median part to the 

 apex which is almost bi-lobate, each lobe being broadly rounded, 

 palps cavity narrow, shallow ; maxillae broad, robust, inner lobe 

 simple, densely hairy, upper lobe narrow, styliform, coated with 

 long, dense hairs ; last joint of palpi nearly cylindrical ; clypeus 

 parallel, if seen from above, and plainly carinate laterally, anterior 

 margin not carinate, broadly but not deeply scooped out in the 

 centre with the angles moderately rounded ; antennal club not quite 

 as long as the pedicel in the $ ; clypeus sub-parallel and carinate 

 laterally but with the lower margin slightly ampliate ; the anterior 

 margin is not renexed and is broadly but not deeply scooped ; 

 prothorax sub-trapezoid, base arcuate above the scutellum which 

 is long, sharply acuminate, and very distinctly grooved laterally; 

 elytra broader than the prothorax at the base, moderately attenuate 

 behind, strongly sinuate laterally, and having on each side a dorsal 

 costa beginning at the strong humeral callus and reaching to a 

 short distance from, or to half the length ; sternal process 

 broad, transverse, or slightly arcuate, projecting somewhat beyond 

 the coxae ; anterior tibiae strongly tri-dentate outwardly, intermediate 

 bi-dentate on the upper side, posterior uni-dentate ; tarsi somewhat 

 short, joints triangularly elongated and angular outwardly in both 

 sexes, but less so in the $ than in the ?■ . 



The species included in this genus are strictly South African. One 

 species (T. fascicular is) ranges from Cape Town to Natal and the 

 Transvaal, and will probably be found in the South African area 

 wherever Protaa grow. The larvae of another species (T. capensis) 

 are found under the base of the small mounds made by the white 

 ant (Termes latericius), and are commonly found there in company 

 with the large grubs of the Dynastid Pseudocyphonistes comiculatus ; 

 they both feed on the material the mound is made of. 



This is the only genus in the Sub-Family Cetonini known to 

 me in which the humeral callus is continued as a supra-lateral 

 costa. 



