45 
Apart from the characters mentioned above, the description 
of C. major (P. L.S., N.S.W., 1892, p. 449) applies to this species. 
In my tabulation of the species of Chalcopterus (loc. cit., 1893, 
pp. 56, &c.) C. proditor would stand beside C. major. The colour 
of the elytra is difficult to describe,—it may be called ‘ green 
with a tendency to look blue in certain lights.” 
N. W. Australia (Mr. French, &c.). 
C. gracilicornis, sp. nov. C. maori, Blackb., aftinis ; capite 
prothoraceque nigris, elytrorum sutura aureo-micanti ; oculis 
quam antennarum articuli basalis longitudine fere magis 
inter se remotis ; antennis gracillimis, articulo 3° quam 1" 
2" que conjuncti multo longiori, articulis 8—11 quam mox 
precedentes multo brevioribus; elytris multo magis sub- 
tiliter seriatim, interstitiis paullo magis crebre magis dis- 
tincte punctulatis; abdomine magis perspicue punctulatis ; 
cetera ut C. major. Long., 9 1.; lat., 42 1. 
Apart from the characters mentioned above, the description of 
C. major (P. L.S., N.S.W., 1892, p. 449) applies to this species. 
In my tabulation of the species of Chalcopterus (loc. cit.) 
C. gracilicornis would stand beside C. major. The interval 
between its eyes is perhaps a trifle wide for that aggregate, but 
is notably narrower than in the aggregate containing Leaz, 
similis, Xe. 
As the above descriptions add to Chalcopterus several species 
closely allied to major and Mercurius, it seems desirable to furnish 
a new tabulation of distinctive characters for the species that 
now stand under “J prothorax notably less nitid than the elytra.” 
(P. L.S., N.S.W., 1893, p. 64),—as follows :— 
K. Width of interval between the eyes scarcely, 
if at all, greater than length of second 
antennal joint. 
L. Size large (723—941.). Elytral striz effaced 
near base ub ae! £3 ... major, Blackb. 
LL. Size much smaller (about 64 1.) Elytral 
strie almost reaching actual basal line of 
elytra ... at os: re sits 
KK. Width of interval between the eyes notably 
greater than length of second antennal joint 
L. Antenne of average robustness. 
M. Size large (S—9$ 1.) Elytra for the most 
part green, scarcely tinged with purple... proditor, Blackb. 
MM. Size much smaller (about 7 1.). Inner 
half ot elytra entirely bright purple .... Mercurius, Blackb. 
LL. Antenne very exceptionally slender ... gracilicornis, Blackb. 
C. boops, sp. nov. C. oculari, Blackb., affinis; angustus, 
subcyclindricus ; prothorace nigro, elytris suturam versus 
viridi-micantibus ; antennis gracilibus, articulo 3° quam 1° 
2°5 que conjuncti sat longiori; prothorace quam longiori ut 
Cresus, Blackb. 
