BY THE REV. T. BLACKBURN. 
1451 
parallel, the prothorax much more strongly carinate, with elytra 
more strongly foveate-punctulate and more strongly tumid near 
the base and more uneven behind ; the mesosternal projection 
resembles the same in 0. fasciatus. At a casual glance this 
species looks much like Aterpus cultratiis, Fab. 
N. Territory of S. Australia ; collected by Mi\ J. P. Tepper. 
O. ARMATUS, sp.nOV. 
Minus latus, postice sat angustus ; piceus, squamis griseis 
setulosis asqualiter (his nihilominus in scutello et longitudinaliter 
prothoracis in medio condensatis) minus sparsim vestitus ; rostro 
sat brevi antice minus dilatato ; prothorace quam longiori quinta 
parte (quam margo anterior dimidio) latiori, sat fortiter ruguloso, 
postice utrinque leviter longitudinaliter impresso ; scutello vix 
elevato ; elytris sat convexis, fortiter seriatim punctulatis, inter- 
stitiis altenns leviter carinatis, quinta pone medium leviter 
tuberculata, humeris lateraliter acute spinosis; mesosterno antice 
acute producto. [Long. 3f-4|, lat. l|-lt lines. 
A very distinct species, well characterized by its uniform grey 
appearance, with a whitish stripe down the prothorax and con- 
tinued on the scutellum, while the elytra have no indication of 
tuberosity except in the fifth interstice being feebly callous 
behind the middle, and the shoulders having a strong sharp 
process directed outward. 
N. Territory of S. Australia ; collected by Mr. J. P. Tepper. 
O. LATERITIUS, Sp.UOV. 
Minus brevis ; sat convexus ; piceo-fuscus, interrupte parce 
breviter squamoso-.setulosus ; rostro bi’evi, lato ; capite inter oculos 
profunde sulcato ; jtrothorace quam longiori vix (quam margo 
anterior plus tertia parte) latiori, a basi ad ajhcem sequaliter 
angustato, basi Vjisinuato, aiqualiter crebre subtilius i)unctulato ; 
scutello elongato elevato ; elytris a basi po.stice sat fortiter angus- 
tatis, striatLs, striis crasse punctulati.s, interstitiis punctulatis vix 
convexis, interstitio 3® basi callo.so, lateribus sat longe pone basin 
