76 M. L. Peringueifs Descriptive Catalogue [Nov. 30, 



D. scTiLPTURATA. Bohem. 

 Insect. Caffrar. part I, 1848, p. 17. 



D. BIS-BICAEINATA. Chaud. 



Eev. Zoolog., 1864, p. 10. 

 D. QUADEICOLLIS. Chaud. 

 Eev. Zool., 1864, p. 37. 



Brassy-black, sliming; head strigose, antennae filiform, labrum 

 yellowish- white, narrowly edged with black in both sexes; prothorax 

 quadrate, strongly impressed in front and behind, grooved in the 

 centre, and with the disk produced in two elongated protuberances; 

 elytra very much depressed, those of the male nearly parallel, with 

 the two sutural apical spines short, those of the females ampliated 

 past the middle, with the sutural part slight-y divaricating and 

 blunt; they are covered with closely set, somewhat ret'culated, 

 moderately deep punctures, and have on each side five raisei lines, 

 the second and third, running close to each other coalesce near the 

 base, reach a little beyond the middle where they unite, and the 

 first, fourth and fifth reach to a little distance short of the apex 

 where they also unite; on each side of the outer apical angle is a 

 white, elongated, supra-mai-ginal, more or less conspicuous patch, 

 sometimes entirely absent. Legs bluish-black, with the base of the 

 tibiae and at times the hind shanks slightly reddish. 



Length, ,19-22; width, 4-8™""- 



Natal (Frere). 



D. his-Ucarinata is undoubtedly identical with D. sculpturafa. 

 Chaudoir himself admits that the only difference between the two is 

 the colouring of the basal part of the tibiae. 



D. quadricollis, which I have closely examined, does not seem to 

 me to differ from bis-hicarinata beyond having in the female a little 

 more sideways infuscated labrum, in one of the males (from Damara- 

 land) the second and third costae are very short, but the same thing 

 occurs also in males of D, dathrata captured in one locality. 



