22 • 



to apex, all angles really obtuse, though seen from above the 

 posterior angles apparently rectangular; distinctly punctate, 

 the punctures smaller and less dense than on head, without 

 defined Isevigate portion or any vestige of middle line. Elytra 

 moderately convex (less so than in G . cylindricus, Blkb.), its 

 outline (seen from the side) rather straight, slightly wider 

 than and four times as long as the prothorax ; strongly striate- 

 punctate, the intervals costiform, punctures in striae large, 

 close, and regular, slightly increasing in size from the suture 

 outwards, the intervals between the punctures less than the 

 c diameter of one, their size larger than in G. punctipennis, 

 MacL, intervals minutely but distinctly punctate. Abdomen 

 finely rugose and punctate, sternum punctate only, prosternum 

 'Carinate, legs very nitid and finely punctate, tarsi thickly 

 rufo-setose, hind tarsi with basal joint nearly as long as the 

 rest combined. Dimensions — 14 x 7 mm. 



Hah. — North- West Queensland: Camooweal. 



Two specimens, both apparently female, sent to Dr. 

 -E. W. Ferguson, and generously presented to the author, add 

 an exceptionally beautiful species to the genus. It is easily 

 distinguished by its combination of deeply-striated elytra, 

 brilliant colours, nitid surface, wide eye interval, and rufo- 

 setose tarsi. Wider and less convex than G . cylindj^icus , its' 

 colour separates it at once from G . costatus, Blkb., near which 

 it stands in my table. Type in the author's collection. 



Chalcopterus iridescens, n. sp. 



Elongate, subparallel, convex; mouth purple and blue, 

 front and vertex coppery-purple, pronotum bright b'urnished- 

 xjopper, elytra variegated, the suture bright-gold, then a nar- 

 row stirip of bright-purple (these colours forming an elongate 

 patch, not in vittse nor continuous to apex), shoulders bronze, 

 the rest of elytra a brilliant iridescent-blue, changing to green 

 or gold, according to the light reflected; under-side brilliantly 

 nitid and variegated, the central portions blue or green with 

 purple reflections, epimera and prosternum purple. Legs deep 

 purple-blue. Tarsi with yellow clothing. 



Head closely and evidently punctate, eyes distant, 

 -slightly less than the length of the basal joint of antenna, 

 antennae widening to apex, joint three shorter than fourth 

 and fifth combined, sixth to tenth gradually longer and 

 wider, eleventh longest cylindrical. Pronotum truncate in 

 front, sinuate behind, base less than twice as wide as apex, 

 sides arcuately converging to apex, all angles obtuse and 

 rounded, disc impunctate and mirror-like. Scutellum 

 triangular and depressed. Elytra wider than prothorax, 

 ■convex transversely and more than usually so longitudinally. 



