Scarabseidge in the British Museum. 509 



2 . Capite paullo angustiori, vertice carina elevata (angulis denti- 

 formibus) instructo ; thorace antice carina leviter flexuosa, lateri- 

 bus pone angulos anticos minus sinuatis crenulatis ; elytris basi 

 sine tiiberculis. 



Long. 17 lin. 



Hob. Africa {Burchell). 



Allied to H. atropos, Bohem. The head has a distinct but 

 not veiy deep triangular emargination in the middle of the 

 front margin. The male has the two erect horns placed at 

 the middle, wide apart. The female has a strong carina more 

 on the vertex. The male has the sides of the thorax rather 

 strongly emarginate before the anterior angles, which are 

 nearly right angles ; the raised dorsal part is in outline 

 nearly an equilateral triangle. The thorax of the female has 

 the anterior carina slightly arched forwards in the middle and 

 then gently sinuate on each side, the sinuosity about equal in 

 extent to the part that is arched forwards. The male has 

 three tubercles at the base of the elytra, two on the fourth 

 interstice and one on the fifth ; there is also a trace of another 

 on the third interstice. 



Caiharsius Jacksonij sp. n. 



Niger, nitidissimus ; capite lato, leviter ruguloso, vertice laevi, 

 postice cornu longo, gracili, acuminato, recto, instructo, margine 

 antico medio sat late triangulariter emarginato, utrinque laevissimo 

 sinuato ; thorace confertim subtiliter granuloso, antice fere verti- 

 cali subtiliter punctulato, medio laevi, cornubus quatuor crassis 

 acuminatis, parte elevata subtilissime coriacea et subtiliter sat 

 crebre punctulata, linea mediana leviter irapressa ; elytris leviter 

 striatis, striis fere kevibus, interstitiis fere planis, subtilissime sat 

 crebre punctulatis ; pygidio sat crebre punctulato. 



Long. 11 lin. 



Hah. E. Africa, Masai {F. J. Jackson, Esq.). 



Of all the species of Caiharsius known to me this is the 

 most like the true C'ojjris of the hinaris group, and is parti- 

 cularly like the Japanese C. pecuarius, Lewis. Compared 

 with G. lunaris the head is lai-ger and the anterior emar- 

 gination wider ; the horn is erect and slender. The thorax 

 has the four horns approximately equal, the lateral ones as 

 in C. lunaris, the middle pair more conical, acute, separated 

 from each other by a nearly equilateral-triangular space ; the 

 sides are arcuately rounded, the anterior angles a little greater 

 than right angles. The elytra are short, the striai very 

 lightly impressed, the eighth with the usual carina only at 

 the base for about two lines in length. Tlie posterior tibiaj 

 have the two caiinai well marked. 



