Mr. T. V. Wollaston 07i the Coleoptera of St. Helena. 407 



M. ohliteratus and deb ill's. Apart, however, from its different 

 outline, and perhaps rather less intensely brassy tinge, it may 

 be known from both of these by its larger size and by being 

 altogether more coarsely and elosely pnnctm-ed. Its elytral 

 striai, moreover, are deeper at their extreme base, and have 

 the appearance at first sight of short divergent grooves. 



40. Microxylobius obliteratus, n. sp. 



M. breviter ovato-fnsiformis, laete aeneus, nitidissimus, calvus ; 

 capite parce et le^'iter punctulato, rostro (saltern in fceminis) 

 elongate subgracili tercti, in maribus sat profunda sed in fceminis 

 minutiiis pimctato ; prothoraco ovato, basi truucato, ad latera 

 parum rotundato, convexo, parcius ct pins minus obsolete punc- 

 tato (punctis magnis sed levibus, iuterdum suboblitcratis) ; elytris 

 convexis, ad latera rotundatis, levitcr punctato-striatis, intersti- 

 tiis levitcr subseriatim ])unctatis (punctis ubique sat magnis sed 

 levibus) ; antennis pcdibusquo fere ut in specie praecedente, sed 

 illis paulo gracilioribus capitulo minus abrupto. 



Long. Corp. lin. 1|. 



The 3f. ohliteratus is not only more highly polished and 

 more resplendently brassy than the terebrans, but it is also a 

 little shorter and relatively more ovate or elliptic, being wider 

 in proportion to its length. Its rostrum and antenna (which 

 have their club less abrupt) are more slender, the former, in 

 the female sex, being especially longer and more shining ; 

 and its prothorax and elytra, particularly the former, have 

 their punctm-es (although perhaps equally large) altogether 

 less densely packed and more lightly impressed — those on the 

 prothorax indeed being sometimes, as in the case of a female 

 example (the only one of that sex which I have yet seen) 

 Avhich is now before me, nearly obliterated. The very few 

 specimens of this distinct Microjcylohius which have come be- 

 neath my notice are amongst the Coleoptera captm-ed by 

 Mr. Mclliss. 



41. Microxylobius debilis, u. sp. 



J\I. aiigustus, fusiformis, la;te ajneus, iiitidus, calvus ; capito pares 

 et levitcr punctato, rostro clongato subgracili sat coufcrtim ac 

 profunde punctato ; protboracc ovali, convexo, parum grosse sed 

 \-ix profunde punctato ; elytris cllipticis (anticc valdc ct gradatim 

 angustatis — quare antice et postice suba^fjualitcr attcimatis), 

 grosse sed vix profunde striato-punctatis, iuterstitiis sat grosse 

 uuiseriatim ])uuctatis, ad ba-sin ip.sissiniam mucronibus asjicratis ; 

 antennis pedibusque fore ut in sj)ccic pra^ccdentc sed subgraci- 

 lioribus ac scnsira obscurioribus, illis paiUo brevioribus, funiculi 

 art" 1'"° sccundo subbrcviore (nee sublongiore). 



Long. Corp. lin. If. 



The single example from which the above diagnosis has 



