47 
perspicue punctulatis; prosterno medio vix distincte 
carinato ; corpore subtus sat obsolete punctulato; femoribus 
anticis antice subtiliter punctulatis; tarsis subtus fulvo- 
setosis, posticorum articulo basali quam apicales 2 con- 
juncti vix longiori. Long., 71.; lat., 321. 
An extremely isolated species in the genus on account of its 
decidedly costate elytra. In a natural arrangement it would 
stand, I think, near longiusculus, Blackb., but the exigencies of 
classification would cause it to standin my tabulation of the 
Chalcopteri beside mimus, Blackb., from which it, and the pre- 
ceding species, may be thus distinguished :— 
K. Interstices of elytra feebly convex. 
L. Elytral striz much more strongly punctured near 
apex than near base . zonatus, Blackb. 
LL. Elytral strize evenly (or nearly so) punctured . mimus, Blackb. 
KK. Interstices of elytra quite strongly costate ... costatus, Blackb. 
An example from Queensland in Mr. French’s collection must, 
I think, be referred to this species, although it is coloured very 
‘differently, the elytra being bright blue, with the suture and all 
the strie purple. 
W. Australia. 
C. acutangulus, sp. nov. Oblongo-ovalis; sat nitidus ; niger, 
elytris aureo cupreo et viridi versicoloribus ; capite crebre 
subtilius equaliter punctulato; oculis quam antennarum 
articuli basalis longitudine paullo magis inter se remotis ; 
sulcis ocularibus subfoveiformibus ; antennis quam corporis 
dimidium sat brevioribus minus robustis, articulis 6—11 
perspicue dilatatis inter se sat equalibus, articulo 3° quam 
1s 2°5 que conjuncti vix longiori quam 4° 5"° que conjuncti 
paullo breviori ; prothorace quam longiori (et postice quam 
antice) fere duplo latiori, crebre subtilius fere ut caput 
punctulato, antice leviter emarginato, a basi antrorsum 
(superne viso) angustato sed parum arcuato, basi media 
vix lobata, angulis anticis obtusis posticis (superne visis) 
acutis fere dentiformibus ; elytris vix striatis, seriatim sub- 
tiliter punctulatis, interstitiis planis vel vix obsolete con- 
vexis subtilius (fere ut prothorax) crebre punctulatis ; 
prosterno medio planato; corpore subtus sparsim subtiliter 
punctulato, abdomine crebre rugato; femoribus anticis 
antice subtiliter punctulatis ; tarsis fulvo-setosis, posticorum 
articulo basali ceteris conjunctis longitudine equali. Long., 
6—7 1.; lat., 3433.1. 
This species, and the next described, fall into an aggregate Gis- 
tinguished from all other described Chalcopteri by the presence of 
ocular sulci in combination with legs of dark colour (the tarsi 
having fulvous vestiture). They are both extremely distinct 
