80 
circiter tertia parte brevioribus, articulo 3° quam 2": duplo 
longiori quam 4" paullo breviori quam 5™ vix breviori ; 
capite inter oculos profunde transversim sulcato, fronte 
longitudinaliter vix impressa ; oculis minus prominulis ; pro- 
thorace quam longiori paullo plus quam duplo latiori, fere 
eequali, subfortiter minus crebre sat equaliter (et latera 
versus confertim subtilissime) punctulato ; elytris dupliciter 
(sc. sat crebre subtilissime et sat crebre vix subtiliter) nullo 
modo rugulose punctulatis. Long., 4 1.; lat., 22 1 
The elytral vittz are considerably wider than the yellow 
stripes, so that the elytre are more black than yellow. The 
greatest width across the elytra is nearly four times the width of 
the prothorax and the elytra are fully six times longer than the 
prothorax. The hind angles of the prothorax are by no means 
rounded off but well-defined obtuse angles. At once distinguished 
from O. Fryi, Clk., by inter alia the absence of a transverse pro- 
thoracic impression, the less close puncturation (devoid of any 
rugulosity) of the elytra, and its less prominent eyes. 
Queensland ; Port Mackay; sent to me by Mr. Lower. 
O. ocularis, sp. nov. Elongato-ovata ; flava, antennarum articulis 
2°__8° in parte (9°—11° totis) vittisque in elytris 2 modice 
latis (his postice conjunctis) piceo nigris, tibiis externe tars- 
isque infuscatis; antennis minus robustis quam corporis 
dimidium paullo longioribus, articulo 3° quam 2" duplo 
longiori quam 4" sat breviori quam 5” vix breviori; capite 
fere ut precedentis (0. imsignipennis). oculis sat prominulis ; 
prothorace fere ut preecedentis sed partis lateralis punct- 
uratione subtili multo minus conferta minus subtili ; elytris 
fere ut precedentis punctulatis. Long., 4 1.; lat., 221. 
Allied to the preceding but with the vittze (especially the 
external one) of the elytra narrower, the antenne shorter and 
less robust, the eyes considerably more prominent, the excessively 
close and fine puncturation on the sides of the prothorax want- 
ing, &e. At once distinguishable from O. Fryi, Clk., by the 
puncturation of the elytra not showing any tendency to rugulos- 
ity, the absence of the transverse prothoracic impression, Xe. 
N. Queensland ; taken by Mr. Cowley. 
O. ignota, sp. nov. Elongato-ovata ; rufo-flava, antennis articul- 
orum (1'—3' parte inferiori dilutiori) vittisque in elytris 2 
modice latis (his postice conjunctis) piceo-nigris, tibiis 
externe tarsisque infuscatis ; antennis robustis quam corpus 
circiter tertia parte brevioribus, articulo 3° quam 2™ haud 
duplo longiori quam 4"* tertia parte breviori quam 5™ mani- 
feste breviori ; capite fere ut O. insignipennis ; oculis minus - 
prominulis; prothorace quam longiori fere triplo latiori, 
