102 Mr. G. Lewis on 



ini egra aiiticc recta ; pronoto striis duabus pone oculos coales- 

 cciitibus, interstitiis pone aiigulos purictatis ; clytris striis 1-4 et 

 humerali integris, 5 basi abbrcviata, suturalimagislonga, humerali 

 externa brevissiraa ; propygidio pygidioque dense punctatis ; 

 mesostcrno baud sinuato, stria marginali Integra ; tibiis anticis 

 3-dentatis. 

 L. 7| mill. 



Extremely similar to H. ceneus, Lew., but differs in being 

 black and rather less convex. Also there is a fine punctuation 

 only within the stria at the anterior angle, not a band of 

 conspicuous points ; the outer humeral stria is median and 

 very short, scarcely more than an elongate puncture, and the 

 pygidia are not quite so densely punctate. 



Hah. Zambesi Kiver. 



MlcroUster Sheppardi, sp. n. 



Ovalis, parum convexus, niger, nitidus ; antennis pedibusque nigris ; 

 t'ronte stria transversa in media interrupta, stria anterius arcuata ; 

 pronoto lateribus distincte punctato, stria margiuali Integra ; 

 elytris striis humeralibus n^illis, 1-3 dorsalibus integris, validis, 

 4 et suturali a^qualibus antice abbreviatis, 5 dimidiata ; pro- 

 l)ygidio sparse punctato ; pygidio fere Isevi ; prosteruo bistriato, 

 striis in medio interruptis ; mesosterno late emarginato, stria 

 Integra ; tibiis anticis 4-dentatis. 



This species is larger than M. coronatus, Lew., but extremely 

 like it. It differs by its more oval form, by the transverse 

 frontal stria being broken in the middle, by the thorax being 

 more distinctly punctate, by the elytral stiige being deeper 

 and distinctly crenate, and the interstice between the first and 

 second striae is markedly wider at the base ; the prosternal 

 stria are interrupted like those of coronatus, and this may 

 prove to be a generic character of many species. In coro- 

 natus the elytral sti iai are less deep and very feebly crenate ; 

 in both species there is a transverse crenate stria marking the 

 suture of the mesosternum, and laterally it is continued along 

 the metasternum. 



It is satisfactory to find a second species which possesses 

 the characters on which the genus was lately established; to 

 these characters may now be added the form of the frontal 

 strije and the similarly interruj)ted prosternal stria3. 



Ilab. Beira, East Africa (P. A. Sheppard). Several 

 examples. 



