238 [March, 



thorax, and at the apex dilated and furcate, the fork being in the 

 plane of the axis of the body, not transverse. 



Onthophagus cheysopes. — O.semiris (Thorns.) affinis. Caput et thorax 

 Icete rufo-aurata, elytra c(Bruleo-violacea,pygidlum pedes et pectus viridi-cenea. 

 Caput passim grosse {hand profunde) granulato-rugosum, oviforme basi trun- 

 cato, clypeo marginihus reflexis media fronts tuberculo parvo, vertice carina 

 brevi parum elevata utrinque breviter erecte cornuta ; thorace dense oblongO' 

 granulato versus basin medio IcBviori et punctulato, medio prope marginem 

 anticum tuberculo brevi ; elytris obsolete striatis, sat dense setifero-punctu- 

 latis : pygidio corporeque subtus fulvo-pilosis. $. Tihice antice apice intus 

 spiniformiter productce. Long., 14: mm., <? . 



Nguru, E. Africa (Dr. Baxter). 



The triangular median lobe of the base of the thorax is much less 

 depressed than in O raiiffi/er, lanista, &c. In the short bicorned 

 crown, the species resembles O, semiris (Thorns.), from the Gaboon. 



Onthophagus cometes. — 0. semins similis sed valde differt vertice uni- 

 tuberculato, etc. Cupreus antice viridi-auratus elytris fusco-cupreis, dense 

 breviter fulvo-pilosus : capite ovato {basi truncato) crebre granulato vertice 

 uni-tuberculato ; thorace passim dense asperato-punctato, lobo triangulari 

 basali depresso solum Icevi, dorso longitudinaliter impresso nee tuberculato : 

 elytris sat exarato-striatis interstitiis crebre asperato-punctulatis. Corpus 

 subtus cum pedibus cvpreo-auraius nitidus. ? . Tibice anticce apice intus 

 simplices. Long., 12 mm., ? . 



Grab o on. 



Both sexes, doubtless, have the same armature of the head, such 

 being the case in 0. semiris, which is bituberculated, and in O. Brucei, 

 which is unituberculated. 



Onthophagus dicella. — Brevis, robustus, convexus, castaneo-fuscus, 

 sublcBvis, elytris basi obscure rufo-maculatis : capite subtiliter punctulato, 

 margine Jlexuoso, clypeo antice valde sinuato-angu state apice reflexo et obtuse 

 bidentato, carina anteriori obtuse arcuata, posteriori acutiori recta ; thorace 

 valde transversa angulisque anticis late fulcatis, antice IcBvi, subverticali 

 bi-concavo, dorso valde convexo, antice cornu lato divaricato-furcato, horizoyi- 

 tali, armato, postice puncttilato {versus latera granulato) basi integriter 

 marginato medio pvrparum angulato : metasterno haud carinato : elytris 

 subtiliter punctulato-striatis, interstitiis planis alutaceis sparse minute seti- 

 fero-punctulalis. Long., \'6 mm., <? . 



Mamboia (Mr. Last). 



Onthophagus cecestjlus.— 0. helciato (Har.) affinis; brevis, igneo- 

 cupreus elytris cupreo-rujls ; capite piano inermi, punctulato, clypeo apice 

 late et alte rejlexo subsinuato ; thorace dorso in gibbere subcuboidali elevato, 

 profunde sat dense sed discrete punctulato, basi medio leviter angulato 



