210 [Maroli, 1888. 



The genus DiasteUopalpios has been recently founded by von 

 Lansberge, to include D. tridens, D. nocfis, D. Johnstoni, and D. 

 lameUicollis, a natural group, in which the first joint of the labial 

 palpi is triangularly dilated, and the antennal club cupuliform. In 

 all the species the metasternum anteriorly has a prominent carina, 

 with a more or less free and acute apex. 



DiASTELLOPALPTJs Thomsoni. — Late obJongo-ovatus, subtus cJialyheus 



supra capite thorace et pygidio viridi-ceneis (sub-coeruleis) elytris nigris 



nitidis : clypeo semiovato grosse scabroso : thorace ante medium dilatato 



{angulis anticis breviter falcatis) postice valde sinuato-angustato angulis 



rotundatis, medio basi paullulum producto-triangulari ibique nee planato sed 



suleulo profundo basali interrupto ; supra grosse distanter granulato disco 



posteriori aspere punctato ; elytris striis punctulatis vix impressis interstitiis 



planis confuse sed discrete setifero-punctulatis. $. Carina frontalis brevis, 



verticeque cornu brevi triangulari erecto armato. Thorax antice verticalis 



Icevis et supra breviter quadridentatus, dentibus duobus intermediis per cari- 



nam brevem angulatam conjunctis et antice vertlcaliter obtusius carinatis, 



dentibus exterioribus majoribus liberis. ? , Carina frontalis elongata valida, 



verticeque carina quadridentata. Thorax antice sub-verticalis carina brevi, 



hituberculata fere sicut iti S sed dentibus lateralibus nullis. 



Long., 16 — 20 mm., S ? . 



Taveta, Kilimanjaro (Mr. Joseph Thomson). 



The anterior tibiae are not produced at their inner apex in the ^ , 

 but show on the upper surface near the base of the tarsi a smooth 

 tubercle, apparently the rudiment of the apical dentiform process, so 

 frequently distinguishing the ^ in Onthophagus. In. D. tridens (Fab.), 

 ^ , this process does not project laterally, but forms a triangular tooth 

 in the same position as the rudimentary tubercle of D. Thomsoni, $ . 



DiASTELLOPALPUS EBENINUS. — Late oblongo-ovatus, robustus, nigerrimus 

 nitidus femoribus plus minusve castaneo-rufis. Clypeus sat breviter rotundato- 

 triangularis rugulosus, carina frontali ((? ?) valida: thorace postice valde 

 sinua.to-angustato, angulis anticis haud recurms posticis rotundatis, margine 

 basali medio subacute productis ibique breviter caiHnato vel denticulato, dorso 

 passim crebre sed discrete punctato-granulato, postice tantum punctato : 

 elytris politis subtiliter punctulato-striatis, interstitiis fere planis sat crehre 

 setifero-punctulatis setis nigris. S . Carina verticis alta fere ab oculo usque 

 ad oculum extensa, verticaliter sub-arcuata. Thorax antice alte verticalis 

 haud prof unde punctatus, supra carina valida verticaliter arcuata, utrinque 

 fere usque ad foveam lateralem extensa. ? . Carina verticis altior, curvata, 

 angulis utrinque dentiformiter productis. Long., 16 — 19 mm., <J $ . 



Cameroons and Old Calabar. Pour examples. 



The armature of the ^ so much resembles that of the opposite 



