51 



apicem paruin contracta, transverse fissa, haud spinosa. Cor- 

 pus infra convexum, antennis pedibusque fere ut in Sten. Roei 

 conformatis. 

 Type of the Genus, Stenochorus biguttatus of Donovan. 



Sp. 1. CopTOCERCUS BIGUTTATUS, Donovan, vid. pi. 2. fig. 7. 

 Copt, biguttatus, thorace mutico,ferrugineus, elytris antice punc- 

 tato-rugosis, testaceo-maculatis, bidentatis macula Jlava. 

 Long. lin. 8 ; lat. lin. 2. 



I received this insect from Mr. Donovan, and therefore have no 

 doubt respecting the individual species. The elytra, according to the 

 above description, can scarcely be considered as bidentate ; they 

 appear as if they were abruptly broken off at their apex. The sexes 

 vary very much in size. 



Sp.2. CoPTOCERCUS SEXMACULATUS. Cop/, wjg-er; antennis brunneis ; 

 thorace tuberculato et rugose ; elytris 6 maculis luteis notatis, 

 pedibus rufescentibus. Caput atrum antennis brunneis. Thorax 

 utrinque denticulatus, incequalis, rugosus, luberculatus, macula 

 media elevata et glabra. Elytra nigra antice varioloso-punctata, 

 posttce punctis minoribus. Sex-maculata, macula 1""^ lutea paullo 

 infra basin, 2^" fere media seu melius fasciata, li'"* ajncali pal- 

 lidiore. Corpus infra cinereo-piceum ; pedibus rufo-brunneis. 

 Long. lin. 7 ; lat. lin. 1|. 



This species, which appears to have escaped the notice of ento- 

 mologists, is abundant. I suspect that the male sex will have the 

 denticulation on each side of the thorax more marked than in the 

 female described. 



Sp. 3. CoPTOCERCUS UNiFASciATUS. Copt. atev thorace incequali 



tuberculato, elytris nigris puncfatis, et flavo-fasciatis, punctis 



ternis, maculisque minutis in singula, inter basin et medialem 



fasciam positis. Corpus infra rubro-piceum ; pedibus concolori- 



bus, aureo-tomentosis ; abdomine nigra, et nitido. 



Long. lin. 6; lat. lin. 1^. 



The above insect I received from Captain Roe, of tlie Swan River 

 Settlement in New Holland. 



Section 4. DenticoUes. 



Antenna tomentosse. Thorace utrinque spinoso ; dorso dentato ; 

 elytris apice obtusis. 



Gen. Trachelorachys*, Nov. Gen. 



Type of the Genus, Stenochorus fumicolor . 



Caput exsertum, oculis prominentibus, antennis corpore breviori- 

 l)us. Palpi maxillares mandibulis longiores. Antenna 11 -ar- 

 ticulatae, 1™° cylindrico parum deformi ad basim tenuiori et 

 externe crassiore, 2**° brevi subcyathiformi, reliquis fere sequa- 



• The above word is formed of Ti>oix,ri><-oi, collum, and ^ctx'it " ipine. 



