17 



Prothorax widest at base, base twice the width of apex (7 

 and 3'5 mm. respectively), apex truncate, base sublobate, 

 sides arcutely converging from base to apex, anterior angles 

 obtuse, posterior (seen from above) acute, (from the sides) 

 obtuse, lateral carina not, or very little, evident from above; 

 disc distinctly but not coarsely punctate (as in C . swperhus, 

 Blkb.), punctures deep and fairly close. Scutellum 

 triangular, metallic and nitid, impunctate. Elytra seriate- 

 punctate, each with eight rows, besides the scutellary and 

 lateral rows, of small, deep, evenly-placed punctures, at inter- 

 vals of the diameter of one of them ; the intervals quite flat, 

 closely punctate with punctures not much smaller than those 

 in the series, both seriate and interstitical punctures larger 

 and more clearly differentiated than those in C. affinis, Bless. 

 Abdomen closely punctate, finely strigose on basal segments, 

 metasternum sulcate behind, carinate in front, prosternum 

 coarsely punctate, posterior tarsi with basal joint as long as 

 the rest combined. Diinensions — Male, 20 x 10'5 mm. ; 

 female, 21 x 11 "5 mm. 



Hah. — Western Australia: Sandstone (C. J. Clayton); 

 North-Western Australia (C. French). 



Four specimens are under examination. This is perhaps 

 the most beautiful of all the species of this genus, as well as 

 one of the largest. It is readily separated from its allies by 

 the combination of large size, coloured thorax, head, and 

 prosternum, elytra splendidly variegated in vittse, intervals 

 flat and strongly punctate, the elytral punctures small in pro- 

 portion to the dimensions. It is perhaps nearest to C . rugosi- 

 pennis, Macl., in general appearance, but differs widely in 

 the size of the punctures. The outline of the elytra, seen 

 from the side, is an even, gentle curve, with the highest point 

 near the middle. The male is more convex, with the sides 

 more parallel, the female being slightly widened behind the 

 middle. Types in the author's collection. 



Chalcopterus gilesi, n. sp. 



Elongate-ovate, elytra subcylindric and parallel, head and 

 prothorax dull-black, under-side and legs nitid-black, apical- 

 joints of antennas pitchy-brown, tarsal vestiture red ; elytra 

 splendidly variegated in longitudinal vittae in the following 

 order : suture narrowly purple, intervals one and two blue, 

 third and fourth green or golden, shading off to purple, then 

 green, purple, with extreme sides and epipleurge golden or 

 green. 



Head distinctly, closely punctate, less closely on forehead 

 than on episterna, eyes separated by a space greater than 

 the length of the antennal basal joint, without definite ocular 



