239 
projection hindward which slightly widens it) and widening out 
laterally to occupy the whole of the lateral margins, on each 
elytron (a) a yellow mark roughly resembling a figure 3 with its 
base towards the suture and its points towards the base of the 
elytra not quite touching the margin anywhere (0b) an elongate 
transverse patch (constricted in its middle) a little behind the 
middle of the elytra and (c) an oval spot close to the apex. In 
some examples the intermediate (5) yellow mark is connected in 
its middle by a slender line with the subbasal mark and (more 
broadly) at its inner extremity with the subapical mark. The 
black markings (regarding the derm color as yellow) are described 
in the Latin diagnosis above. 
N. Queensland ; taken by Mr. Koebele near the Barron River. 
NEDA. 
NV. bicolor, Blackb. Mr. Koebele obtained in N. Queensland two 
specimens which I attribute to this species and which (if I am 
right in doing so) show it to be subject to considerable variation. 
One of these two examples has the prothorax widely bordered 
with yellow; the other is considerably larger than the type 
(long., 341.) and also differs in having a large faintly defined 
reddish blotch immediately behind the base, and close to the 
external margin, on each elytron. I can find no other differences 
than those I have noted, but as it is possible that the examina- 
tion of more specimens may prove the larger example to represent 
a distinct species I will call it var.? picturata. 
ORCUS. 
O. Lecanii, sp. nov. (Mas.). Subhemisphericus; sat fortiter 
convexus; subtiliter minus crebre (quam O. Australasie, 
Boisd., paullo magis perspicue sed haud multo aliter ; quam 
O. Lafertei, Muls. minus subtiliter multo magis perspicue ; 
quam O. punctulatus, Blackb., multo minus crebre vix minus 
fortiter; quam O. chalybeus, Boisd., paullo minus crebre 
minus fortiter) punctulatus ; supra obscure nigro-viridis vix 
auratus (labro et prothoracis margine antico testaceis 
exceptis); subtus (antennis palpis pedibusque inclusis) 
testaceis ; prothorace ad latera strigoso-ruguloso ; elytris ad 
latera minus reflexis (fere ut O. Australasie) ; clypeo ad 
latera fortiter laminato (fere ut O. Australasie) ; prosterni 
lateribus et elytrorum epipleuris foveolatis. Long., 24 1.; 
lat; 2 I: 
Fem. prothorace antice vix testaceo-marginato ; elytris minus 
perspicue punctulatis. Long., 22 1.; lat., 211. 
The distinctness of the puncturation on the upper surface in 
the Orez seems to depend chiefly on the nature of the derm which 
