25 



apex, the former bisinuate, the latter arcuate, sides widely 

 rounded (seen from the sides), all angles obtuse, disc finely 

 punctate, with a smooth medial line and a fovea on each side 

 near the middle of disc. Scutellum black, minutely punctate. 

 Elytra very convex (as in C. a-ffinis, Bless.), finely striate- 

 punctate, the seriate punctures close together, distinctly 

 larger than in C . a-ffinis, and lying in shallow strise, clearly 

 defined throughout except near base, intervals everywhere 

 quite flat and impunctate, and very finely transversely 

 rugose, giving a silky opaque appearance. Abdomen finely 

 striolate. Dimensions — 12-13 x 6-6^ mm. 



Hah. — North Queensland: Coen district (H. Hacker); 

 Endeavour River (G. Masters). 



Two specimens examined — one given me by Mr. Hacker 

 some years ago, the other was amongst some duplicates of 

 the late Mr. Masters — are evidently undescribed. Amongst 

 the species which combine black pronotum, with red- or 

 yellow-clad tarsi only mundus, Blkb., acutangulus, Blkb., 

 and minor, Blkb., could possibly be confused with it; but 

 the first two of these have their elytral intervals more or less 

 punctate, while in minor they are almost smooth, while none 

 of them are striate. I know of no other Chalcopterus having 

 this finely rugose but impunctate surface (easily seen under 

 a lens). The colour is an almost uniform purple, except at 

 the sides. Type in the author's collection. 



Table of Chalcopteeus. 



Species marked thus * are unknown to the author, or determined 

 only by description. 



The number in the second column indicates how far the specified 

 character is inclusive in the first column; thus 3|9|"Elytra striate" 

 applies to all species from 3-9. inclusive, in the first column, 



1 91 Pronotum black. 



2 44 Tarsi nigro-setose. 



3 9 Elytra striate. 



4! Size large, 19-21 mm. long ... superhvs, Blkb. 

 5! 9 Size smaller, 10-15^ mm. long. 

 6 1 Elytral colours in distinct longi- 



! tudinal vittse inferioris, Blkb. 



_i *blackburni, Geb. 



9 Elytral colours not in distinct 

 longitudinal vittse. 

 Size small, 10-11 mm, long; form 



depressed sidcipennis, Hope 



! ^ siitiiraUs, Pasc. 



[Size larger, 15 mm. long; form 



j very convex mastersi, Blkb. 



10 44 1 Elytra seriate-punctate. 



Ill 13 Size large, 19-20 mm. long. 



12! Colours in distinct longitudinal 



I vittse imperiaJis, Blkb. 



13| Colours not *kochi, Blkb. 



