240 
extremely strongly dilated laterally, forming a wide lamina in 
front of the eyes, and entirely concealing the base of the antenne, 
which lamina becomes successively feebler in Awstralasie cyano- 
cephalus cclestis, until in chalybeus it is reduced to a mere fine 
carina. Mulsant has already called attention to the presence in 
some species, and absence in others, of a fovea on the sides of 
the prosternum. The elytral epipleurze also vary, being fovea- 
lated more or less strongly in bilunulatus Australasia and cyano- 
cephalus, but not (or at least not distinctly) in the others known 
to me of the genus. I may say that 1 have not seen O. quadri- 
maculatus, De Kerville. The following species appear to be new. 
O. punctulatus, sp. nov. Hemisphericus ; minus convexus ; 
crebre sat subtiliter punctulatus ; supra cyaneus, prothorace 
antice et ad latera ante medium anguste rufomarginato, 
antennis labro palpis pedibus et corpore subtus (prosterno 
epipleurisque nigris exceptis) testaceis ; prothorace ad latera 
quam in disco magis fortiter punctulato sed nullo modo rugu- 
loso; elytris ad latera sat late sat eequaliter deplanatis ; 
clypeo ad latera sat fortiter (fere ut O. cyanocephal, Muls.) 
laminato ; prosterni lateribus et epipleuris foveolatis. Long., 
241.3 lat., 25 1. 
Colored almost as O. cyanocephalus. It is allied to that species, 
but is larger, more evenly rounded on the sides (not at all ovate) 
and not so strongly convex ; the puncturation is finer and much 
closer throughout, the prothorax is not rugulose at the sides, and 
the explanate border of the prothorax is considerably wider ; 
the basal line of the prothorax is (as in that species) distinctly 
separate from the hindmargin. I have no doubt of my identi- 
fication of cyanocephalus, as my type is from Port Darwin 
(near the original locality), and agrees well with the description. 
N. Queensland ; sent by Mr. Masters. 
Q. splendens, sp. nov. Subhemisphericus ; minus convexus ; sat 
crebre minus subtiliter punctulatus: supra lete purpureus, 
subtus cum antennis palpis pedibus epipleurisque testaceus ; 
prothorace ad latera quam in disco magis fortiter punctulato 
sed nullo modo ruguloso ; elytris ad latera anguste deplan- 
atis; clypeo ad latera fortiter laminato: nec prosterni 
lateribus nec epipleuris foveolatis. Long. 14 1; lat.; 
lee 
Easily distinguishable by its small size and bright purple colour, 
the underside being entirely testaceous, as well as by the strong 
lateral dilatation of the clypeus in conjunction with the absence 
of foveze on the sides of the prosternum and on the epipleure. 
The basal line of the prothorax is scarcely separated from the 
hindmargin. 
N. Queensland ; sent by Mr. Masters. 
