288 Annals of the South African Museum. 



parte antica autem sensim rotundata, convexus, impunctatus, 

 impressionibus supra basalibus vel punctis nullis ; elytra prothoracis 

 basi antice baud latiora cum eo cobaerentia, oblonga, postice 

 conjunctim rotundata, ad apicem baud sinuata, convexa, distincte at 

 tenue striata striis dorsaHbus quatuor a basi longe remotis, fere ad 

 apicem ductis, quinta basim attingente, sed ad apicem abbreviata, 

 sexta quinta breviore, basim apicemque baud attingente, stria 

 scutellari nulla ; interstitio tei'tio punctis tribus, primo basali, 

 conspicuo, secundo pone medium tertio ad tertiam partem sito 

 utrinque praedito ; prosternum inter coxas longe spinosum. 



Long. 7 mm. ; lat. 3J mm. 



Allied to 0. angolensis, Erichs., but more convex, and differ- 

 ing in the striation of the elytra ; the first two striae reach in 

 0. angolensis much nearer to the base on each side, and the fii'st 

 one often reaches it. 



Hab. Southern Ehodesia (Salisbury). G. A. K. Marshall. 



Gen. SYSTOLOCEANIUS, Chaud. 

 Systolocranius disckepans, n. sp. 



Niger, capite prothoraceque opacis, elytris parum nitidis, anten- 

 narum articulis omnibus nigris ; pedibus corporeque subtus nigris ; 

 caput impunctatum, punctis duobus juxta suturam frontis sitis 

 baud prominulis ; prothorax longitudine maxima tertio latior antice 

 lateraliter attenuatus, a medio postice fere rectus, basi leviter sub- 

 sinuatus, apice fere duplo latior, supra vix convexiusculus, impres- 

 sionibus supra basalibus baud prominulis, in medio longitudine 

 canaliculatus, impunctatus ; scutellum impunctatum ; elytra antice 

 prothoracis basi nonnihil angustiora, elongata, apicem versus modice 

 attenuata, postice conjunctim rotundata, ibi vix sensim sinuata, 

 supra sub-depressa, anguste punctate striata, interstitiis antice 

 convexiusculis a medio postice prsesertim ad apicem, distincte 

 convexis, tertio punctis tribus, primo ad medium, secundo tertioque 

 magis approximatis ad partem posticam sitis praedito ; corpus 

 subtus nitidum vix punctatum, pedibus impunctatis. 



Long. 13 mm. ; lat. 7^ mm. 



Not unlike in general facies S. tenebrioides, from Nigeria, but 

 smaller, and more gradually attenuated behind ; the intervals on 

 the elytra are also more tectiform. 



Hab. Southern Ehodesia (Salisbury). G. A. K. Marshall. 



