324 LE CONTE.— LONGICORN COLEOPTEEA 



10. A. VARiANS. — Niger vix pubescens, capite scabro, thorace disco parce punctato, antrorsum angustato, 

 utrinque constricto, canaliculato, lateribus rotundatim angulatis, elytris valde punctatis, subtilius versus 

 apicem. Long. -i. 



Missouri, Wisconsin. Dr. Engleman, Varies with the thorax rufo-testaceous, the 

 pleurse of the thorax are thickly punctured. 



11. A. THORACICTJS. 



Pachyta thoracica, Hald. 60. 



Differs from A. varians by its densely pubescent thorax. Not having a specimen 

 I am unable to point out any other character. It was found in Pennsylvania, and is in 

 Dr. Melsheimer's Cabinet. 



12. A. FuscicEPs. — Pallida paulo pubescens, thorace parce punctato, canaliculato, antrorsum angustato, 

 utrinque constricto, lateribus obtuse angulatis, elytris valde punctatis latius marginatis ; pectore, capite 

 scabro, antennisque extrorsum fuscis. Long. -27. 



Cattaraugus County, New York. Mr. Haldeman. 



This species has the same form as A. varians, but is smaller, with a less convex 

 thorax, the lateral angles are obtuse, but not rounded, and the margin of the elytra is 

 much wider. 



Species mihi ignota. 



13. A. LONGioEPS. — Niger punctatus, ex pube alba subincanus, capite elongato, prothorace canaliculato, 



elytris luridis, litura antica, sutura apiceque nigris. Long. 4 lin. 

 Leptura longiceps, Kb. N. Z. 187. 



Found in Lat. 54°. Similar to A. Proteus, but the posterior angles of the thorax 

 are not diverging. 



GAUROTES. 



Oculi integerrimi, prominuli. 



Mesosternum antice subito deflexum, postice truncatum. 



Palpi parum dilatati, apice recta truncati. 



Tibiae apice recte truncatae. 



Habitus omnino Acmseopis §3, at mesoterno lato gibbo Rhagio similis. Corpus 

 obesum ; caput pone oculos sensim paulo angustatum, ore vix attenuate. Antennje 

 tenues elongatae, articulo 4'° paulo breviore. Mentum transversum antrorsum vix 

 angustatum. Thorax antrorsum angustatus, apice constrictus. Elytra thorace multo 

 latiora postice paulo angustata, apice truncata. 



