276 Mr. G. Lewis on 



suturali basi abbreviata ; prosterno bistriato ; mesosterao stria 

 marginali antice tenuissime imprcssa ; tibiis anticis multiden- 

 ticulatis. 

 L. 7 mill. 



Oval, rather convex, black and shining ; the head rather 

 finely and rather closely punctulate, epistoma transverse and 

 flat, lateral stria fine and not passing behind the epistoma ; 

 the thorax, lateral stria close to the margin and continued 

 behind the head, surface clearly punctulate, but the punctures 

 are rather less dense than those of the head. The elytra, 

 surface punctulate like that of the thorax ; striae, outer humeral 

 fine and complete, inner also complete with its outer edge at 

 the base a little raised, 1-3 dorsal complete with the outer 

 edges somewhat raised, especially those of the first and second 

 striae, 4 fine and shortened before the base, 5 apical eva- 

 nescent and punctiform, sutural fine and evanescent before 

 the base and in the middle it bends a little away from the 

 suture. The propygidium and pygidium are much more dis- 

 tinctly punctured than the head ; the prosternum is bistriate, 

 striae are fine and gradually diverge posteriorly along the 

 narrow keel ; the mesosternum is acutely pointed in front 

 fitting into the incision in the prosternum ; there is a very 

 fine marginal stria only to be seen in front in certain lights ; 

 the metasternum has a well-marked lateral stria and the 

 suture is shown by a straight stria ; the tibiae are all dilated, 

 anterior pair bowed on the outer edge, along which are small, 

 evenly set denticulations (about 16 or 17 in number) ; inter- 

 mediate and posterior tibiae are spinose, the spines are some- 

 what irregular and not closely set together. 



The size and the incomplete sutural stria will distinguish 

 this species from the two following. 



Bab. W. Guinea. 



Probolosternus perniundus, sp. n. (PI. X. fig. 4.) 



Ovalis, parum convexus, niger, nitidus; fronte punctulata, antice 

 leviter impressa ; elytris striis 1-4 suturalique integris, 4 cum 

 suturali arcuatim connexa, 5 antice abbreviata ; prosterno bi- 

 striato, striis basi divergentibus ; mesosterno stria marginali 

 Integra. 



L. 4| mill. 



Oval, rather convex, black and shining ; the head lightly 

 impressed behind the epistoma, surface punctulate, lateral 

 stria fine ; the thorax, lateral stria continued behind the head, 

 surface punctulate. The elytra sparsely punctulate especially 

 in the apical region ; striae, outer humeral very flue and 



