2G2 Mr. G. J. Arrow on LamelUcorn Beetles 



Cyphonistes subfcevis, sp. n. 



Castaneo-rufus, capite marginibusque omnibus anguste infuscatis : 

 C. vallato similis, sed clypeo panlo breviori, canthis antice acutis, 

 elytris subla)vibus, punctis paucis et subtilibus, pygidio basi 

 flavo-hirto. 



Loug. 24-27 mm. ; lat. max. 14-15-5 mm. 



Bah. Brit. E. Africa : Nandi Plateau, 5700-6200 feet 

 {S. A.Neave,^\xnQ 1911). 



Amongst the exeeediiigly similar species of this very 

 difHcult genus C suhlcevis is nearest to (J. arrowi, Prell, but 

 it is broader and more lightly punctured, the anteocular lobes 

 are more sharjjly pointed in front, and the pygidiuin is 

 fringed with tawny hair at the base, from the angles to near 

 the middle. Tlie paramera of the jedeagus of the male are 

 barbed near the middle of the outer edge, but quite destitute 

 of the spiny processes from the inner edge found in the 

 allied species. The last ventral segment of the female has a 

 double emargination, as in C. vallatus and arrowi, but the 

 median tongue, instead of being sleuder and sharp as in 

 those species, is short and very blunt. 



Professor Kolbe has assigned IleteronycJms laliusculus^ 

 Fairm., to his genus Heteroligus, but the desciiption mentions 

 various features inconsistent with that view. Tiie immargi- 

 iiate pronotum and thickened outer edges of the elytra suggest 

 a female of Cyphonistes or allied genus. 



Idioschema, gen. nov. 



Corpus elongatum, depressum. Caput parvum, late triangulatum, 

 utriiique ante oculos extus productum, acutum, clypei apice 

 recurvo, acuto, froute tuberculis duobus parvis trausversim 

 positis, sat remotis, instructa. Prothorax antice minute tuber- 

 culatus. Antennae miuutse, stipitis atque clavae articulis brevis- 

 simis. 3Jandibulse late detectte, concavae, margine externo 

 integro, rotundato. Pedes validi, tarsis omnibus brevibus 

 nnguibusque minutis. Tibia antica crassa, lortiter sed obtuse 

 tridentata, dente supero remote, post medium posito. Tibiae 

 quatuor posteriores extus fortiter spinosse, posticae extremitatc 

 sat lata?, recte truncalSB, C;ilcaribus validis, latis, longiori apice 

 fiexo. Propygidium medio late sat rcgulariter trausversim 

 striolatum. 

 c? . Tarsus anticus contractus, articulo ultimo globoso, ungue 

 majori lato, valde iiiHexo, miiiori fere obsoleto. Proj)ygidiura 

 medio late sat regularilcr trausversim striolatum. 

 loiliter rccurvatum. 



