1900.] Catalogue of the Colcoptcra of SoutJi Africa. 185 



but having a narrow, smooth, median longitudinal line; anterior til)icn 

 non-spinose inwardly, apical spur nearly straight. 



The shape of the cephalic and thoracic horns is almost similar to 

 that of 0. lanista, but the thoracic horns are a little more slender 

 and longer, and the anterior part of the prothorax is divided into 

 two not very deep impressions, the slope is much greater, and the 

 posterior part is not convex. 



Female unknown. 



Length 8 mm. ; width 4|'mm. 



I have only seen the flavescent variety of the species from 

 Damaraland (Swakop Kiver). 



Onthophagus insignis, Paring., 



Plate XXXV., fig. 17. 



Trans. Entom. Soc. Lond., 1896, p. 157. 



Dark bronze green, with the elytra light chesnut browm ; head 

 granular, gense rounded ; prothorax convex, distinctly marginate all 

 round, basal part slightly arcuate and not at all aculeate in the 

 middle, it is covered with deep, somewhat rough, closely set 

 punctures ; elytra amphate laterally from the shoulder to nearly the 

 median part, and a little attenuate from there to the apex ; they are 

 deeply geminato-striate, and the striae are closely punctured, the 

 intervals are filled with deep, closely set setigerous punctures, the 

 humeral callus is not very pronounced, and the second stria is 

 broader at middle , than the third, pygidium deeply pitted, briefly 

 pubescent ; metasternum covered in the centre with setigerous 

 punctures which are more closely set in the anterior part ; inner 

 part of anterior tibiae not spinose, apical spur nearly straight in both 

 sexes. 



Male : Clypeus rounded diagonally laterally, a httle obtuse, and 

 shghtly emarginate at tip ; the frontal carina is distinct, and close to 

 this carina there is a long horn straight for two-thirds of the length 

 and slightly curved in the other third, and from 4 to 4f mm. long in 

 the curve ; the prothorax, which is very sloping in front, has a very 

 deep median excavation beginning at a short distance from the 

 base, the ridges of this excavation are produced at middle into a 

 sharply triangular projection, the excavation is quite smooth. 



Female: Clypeus more regularly rounded owing to the apical 

 part not being as obtuse as in the male ; the frontal ridge is very 

 distinct, and in the middle of the vertex there is a transverse, 

 highly raised ridge, moderately acute at each end ; the prothorax, 



