1420 FURTHER NOTES ON AUSTRALIAN COLEOPTERA, 
described since (at any rate none from Nortliern Australia) are 
characterized as having the prothoracic margin passing to the 
underside and there forming the margin of a kind of prosternal 
gutter, — so I suppose it is distinct from them all. 
Northern Territory of S. Australia. Collected by Mr. J. P. 
Tepper, to whom 1 dedicate it, together with several other Coleop- 
tera already described from the same locality. 
M. JUVENis, sp.no V. 
Fuscus, antennis palpis pedibusque testaceo-flavis ; minus niti- 
dus ; sat elongatus ; pube longiore sat dense vestitus ; prothorace 
baud canaliculate, trans angulos posticos quam longitudine in 
medio subangustiori, a basi evidenter angustato, subtilius regu- 
lariter crebre punctulato, angulis posticis baud divaricatis bicarin- 
atis ; elytris pi’othorace vix angustioribus, a basi attenuatis, apice 
vix emarginatis, fortius punctulato-striatis, interstitiis sat planis 
leviter minus confertim punctulatis ; prothoracis margine lateral) 
antice in prosternum subducto ; tarsorum articuli quarti lamella 
sat lata. [Long. 5-6, lat. lines. 
This species is structurally very near to the preceding, and the 
sculpture and pubescence of its .surface are very similar, but I think 
it certainly not a mere variety, as the entirely different colour is 
accompanied by very different proportions; nor are the differences 
sexual, as I have both sexes before me. The present insect is a 
slender elongate form much narrowed before and behind; the other 
of robust appearance, rather short and parallel as compared with 
many of its congeners. In J/. juvenis the length of the prothorax 
down the middle is distinctly greater than its greatest width 
(across the basal angles), which latter, moreover, scarcely exceeds 
the greatest width of the elytra, — while in M. Tepperi the width 
across the basal angles of the prothorax is very evidently (about 
as 8 to 7) wider than the widest ])art of the elytra and than the 
length of the prothorax down the middle. They differ, too, in 
respect of another character that I find not without its value in 
this difficult genus, — in Tepperi the external margin of the 
