104 Mr. G. Lewis on 



Probolosternus hrevistrius, sp. n. 



Ovalis, parum convexus, niger, nitidus ; frontc minute puncfculata, 

 antice haud impressa, stria margiiiali integra ; pronoto loevissime 

 et sparse puuetulato ; olytris striis 1-4- integris, 4 basi hamata, 

 5 dorsali brevissima, suturali dimidiata ; propygidio fere laevi. 



L. 3| mil]. 



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

 stria complete, not impressed ; the epistoma, surface very 

 minutely and s[)arsely punctulate j the thorax, marginal stria 

 complete, surface sparsely and finely punctured, with an 

 antescutellar fovea ; the elytra, interstices of striae smooth, 

 striae, outer humeral fine, inner humeral and 1-4 dorsal strong 

 and complete, 4 being markedly hamate at the base, 5 is very 

 short and dorsal, being just behind the middle of the disk ; 

 pygidia are almost smooth, but a few fine points are seen in 

 certain lights ; the prosternum narrow and bistriate ; the 

 mesosternuni markedly marginate ; the tibia? are dihated. 



The short discal fifth stria distinguishes this species from 

 the other four at present known. 



Hal). Sierra Leone. A single example in the British 

 Museum. 



Exosternus rufidus, sp. n. 



Ovatus, convexus, nigro-piceus, nitidus ; fronte conspicue rugose 

 punctata ; pronoto stria margiuali integra ; elytris striis tenuiter 

 impressis, margine late rufis ; prosterno striis antice conjuuctis ; 

 mesosterno parum acuto, marginate ; pedibus rufis. 



L. 3| mill. 



Oval, convex, piceous and shining; tlie head rugosely 

 punctured, especially on the anterior part, marginal stria 

 interrupted in the middle, apparently obliterated by the 

 rugosities ; the tliorax, marginal stria complete, surface 

 rather closely punctured at the sides, less and more finely so 

 behind the head, and on the disk nearly smooth ; the elytra 

 somewhat broadly red at the sides and along the apical 

 margin, the outer humeral is complete, inner very short and 

 basal, dorsal 1-4 complete, .5 very short and apical, sutural 

 complete and hamate at the base ; the propygidium is densely 

 ]ninctured ; the pygidium has a fine punctuation at the base 

 and is nearly smooth on the apex ; the prosternum, strife 

 widen out slightly at the base, are parallel along the sides, 

 and join, forming an arched outline anteriorly ; the meso- 

 sternum distinctly marginate and somewhat acute in the 

 middle ; the legs arc red and the anterior tibire arc 6-7-dentate. 



