340 MISCELLANEA ENTOMOLOGICA, 



great variety of outline exhibited in this way would be found to 

 give good specihc characters, but as I have not to and any one to 

 make accurate sketches of the insects, I have been unable to test 

 the value of my theory. 



A. brevis is easily known from the others by its breadth, bril- 

 liancy, and subcordiform thorax, but Weskooodii, parallelocervs, 

 Wyanamattce, angulatus, suhcijlindricus, AdelcdJce, jnmcticolUs, und 

 Odewahnii come so near one another that it is most difficult to find 

 good distinctive characters. I am satisfied, however, that I have 

 not made too many species ; I believe, in fact, that I have three 

 or four more species of this type in my collection. A. foveicollis 

 has very distinctive marks, scutellaris and Turneri have a difier- 

 ent form of thorax from the others, hirhts and Darlingensis have 

 the elytra hairy, and depressus and Boclchamjptnnensis lead ofi" 

 towards the next group. 



Section 2 consists of one group only. It comprises all the 

 species with narrow antennae and tibiae. Commencing with A. 

 Wilsoni, in which the thorax is rather broader than long, it termi- 

 nates with A. Kingii, in which the thorax and general form ex- 

 hibits a near approach to the insects of the first group — Mastersii, 

 cylmdricollis, and Waterliousei. 



The species described by Professor Westwood under the name 

 of suhsidcat'us, from King George's Sound, is unknown to me, and 

 I cannot tell from his description to which of the above groups it 

 would belong. 



I subjoin descriptions of the new species. 



Arthropterus cylindkicollis. 

 Long. 6 lin., lat. 1| lin. 



Piceus nitidus, antennis latis articulo prime quadrate nitido 

 secundo ceteris angustiori, capite inter oculos bi-impresso, 

 thorace capite angustiori eloagato subcylindrico rugoso 

 punctate ad latera antice subrotundato postice subconstricto 

 ad basin truncate linea dorsali leviter irapressa, elytris 

 elongatis parallelis tenuiter punctatis subpilosis pilis brevi- 

 bus fulvis, tibiis apice acute angulatis. 



Hab. Rockhampton. 



