86 Mr. G. Lewis on 



Trihalus cavernicola, Lewis, 1008. 



Ovalis, supra eubdepressus, fiobasneus, nitidus ; froiite concava, 

 Bupra oculos elevata, fero loevis ; pronoto basi transversiiu im- 

 presso ; elytris striis obsoletis ; prosterno striis utrinque diver- 

 geutibus ; antenuis pedibusque obscure brunneis. 



L. 3 mill. 



Oval, somewhat depressed alDOve, brassy, shining; the 

 head, coneave anteriorly with lateral margins elevated, 

 surfaee almost impunctate; the thorax is evenly, finely, and 

 rather closely puuctulate, marginal stria complete, along 

 the middle of the basal edge there is a narrow transverse 

 rugose impression ; the elytra, dorsal stride short, oblique, and 

 ill-defined, disc and the pygidia are almost smooth ; the 

 prosternum, lobe marginate, clearly punctured and micro- 

 scopically strigose, striae divergent before and behind, keel 

 lightly sculptured ; the mesosternum, marginal stria very 

 fine and interrupted in the middle, evenly, sparingly, and 

 very minutely punctulate, transverse stria well-marked -with 

 sixteen crcncllations ; the antennie pale brown, lega 

 obscurely brownish. 



Similar in form and colour to T. copensis, Payk., but the 

 surface sculpture of PaykuU's species is densely punctulate. 



Hab. Usambara; Tanga, in the Mkulumusi caves. 



Pelorurusfece, Lewis, 1906. 



Breviter ovalis, nigro-cupreus, nitidus; elytris viridi-ca^ruleis; front© 

 obscure punctulata, antice impressa ; pronoto lateribus punctato ; 

 elytris striis profundis, 1-3 gemiuatis iutegris, 4 suturaliqne 

 integris simplicibus ; prosterno striis lateribus interruptis at inter 

 coxas miiuite fovcolato ; tibiis auticis denticulatis. 



L. 4J-4| mill. 



Shortly oval, almost black beneath, thorax coppery, elytra 

 greenish blue ; the head impressed behind the cly{ eus, 

 surface finely punctnlate with a lateral stria; tiie thorax, 

 marginal stria complete, punctured laterally, basal edge 

 punctured, especially opposite the second, third, and fourth 

 striie; the elytra, striiie deep and strong and somewhat 

 punctate, 1-3 complete and double, -i complete but single, 

 also the sutural, in one example of three there is a short 

 apical obli(]uc fifth stria; the ]u-opygidinm is finely and on 

 the disc and l)ase very sparingly punctured ; the pygidiuni 

 is compressed, except at the base, wiiich is impunctate and 

 like that of P. crcjoci, Lew., is on the same plane as the 

 propygidium ; the prosternum, the stria? arc broken at the 



