1900.! CaialotjKc of the Colcoptcra of South Africa. 147 



Female : C'lypeus a little more elongate than in tlie male ; pos- 

 terior femora serrulate underneath ; the raised, grooved carina at 

 the base of the head is not higher than that of the male. 



Length 23-25 mm. ; width 12^-14 mm, 



0. .zanibcziaiiiis, Per., is only the large development of the typical 

 O. robnstKH ; it is also a little more convex. 



Htih. Southern Rhodesia (Victoi'ia Falls, Manica), Ovampoland. 



OXITIS INVEKSIDENS, Lausb., 



Plate XXXIV., figs. 10, 10a, 106, 10c, lOt/. 

 Annal. Soc. Entom. d. Belg. 1875, p. 81. 



Piceous-l)lack, shining, somewhat depressed ; head granulose and 

 somewhat plicate transversely in both sexes, no clypeal carina, 

 frontal carina a little curved, distinctly raised, and connected 

 laterally with the liasal one which is not quite so much raised, but 

 has in the centre a short blunt tubercle, genie rounded, not 

 prominent at tip ; prothorax not very convex, regularly ampliate 

 laterally, and having no basal angle, covered with moderately closely 

 set, round punctures, while the two basal impressions which are 

 very shallow and nearly confluent, are covered with fine granules ; 

 it is marginate laterally and in front, but not at the base ; scutellum 

 small but very distinct ; elytra sub-parallel, very slightly sinuate 

 behind the shoulder, humeral callus moderately strong, striai 

 narrow, intervals slightly convex near the base, fifth one a little 

 convex for nearly all the length, and all covered with small but deep 

 punctures; pygidium set with small granules ; metasternum scabrose 

 and having in the centre a longitudinal smooth, shallow groove. 



Male : Anterior tibiie long, slender, deeply curved inwardly from 

 middle to apex, tri-dentate outwardly, or having occasionally a small 

 sinuation where the basal tooth should have been, the three teeth 

 are triangular, not very long, and have a tendency to point a little 

 backward, the mucro is slanting, somewhat sharp at tip, and densely 

 ciliate, underneath there is a long carina reaching from under the 

 basal outer tooth to the base where it is produced into a long, 

 sharp triangle (figs. 10, 10(() ; anterior femora sharply carinate 

 and having a moderately long tooth close to the knee (fig. lOc^) ; 

 intermediate femora deeply incised in the middle underneath and 

 having on each side of the incision a curved tooth (fig. 106), 

 intermediate tibiae simple ; posterior femora having on the upper 

 side a projecting spine, long, sharp, and a little sinuate (fig. lOfZ), 

 and at the lower side a narrow lamina ending in a long, sub- 

 horizontal sharp spine (fig. 10c) projecting from about the median 



