338 LE CONTE.— LONGICORN COLEOPTERA 



C. 



9. L. srH^RicoLLis. — Nigra nitida, capite thoraceque impunctatis, hoc glabra, utrinque valde constricto, 



elytris parallelis, apice rotundatis, sat dense punctatis, breviter ciiiereo-pubescentibus, pedibus plus 



minusve testaceis. Long. •32. 

 Say J. A. N.S. 5, 280. 

 Leptura pauper cula, Nm. Entom. 



Varies with the thorax rufo-piceous. Leptura allecia ? Nm. Ent. 

 Lake Superior, New York, Ohio. 



D.— a. 



10. L. RUFULA. — Nigro-picea, subnilida, capite thoraceque confertissime punctatis hoc campanulato, 

 lateribus angulato, disco longitudinaliter late impresso, elytris parallelis testaceo-rufis, sat dense 

 punctatis, breviter pubescentibus, apice oblique subtruncatis, pedibus rufis, gcnubus tarsisque nigris. 

 Long. '37. 



Pachyta rufula, Hald. 60. 



Lake Superior. The fourth joint of the antennae is shorter than the fifth. 



11. L. BiFORis. — Testacea, parce pubescens, capite thoraceque fuscis, confertitn punctatis, hoc convexo, 

 antrorsum angustato, utrinque valde constricto, profunde canaliculato, elytris postice subangustatis, 

 apice oblique truncatis, densius punctatis, subtilius versus apicem macula laterali ad medium fusca. 

 Long. -^S — 6. 



Newman Ent. : Hald. 64. 



New York and Pennsylvania. June : rare. The fourth joint of the antennae is 

 shorter than the fifth. 



D.— 5. 



12. L. PROxiMA. — Latiuscula, nigra, capite thoraceque pube erecta flava dense vestitis, confertissime 

 punctatis, hoc brevi, convexo, antrorsum valde angustato, lateribus subangulatis, basi profunde 



constricto, disco late canaliculato, elytris luteo-testaceis, confertim punctatis, apice truncata late nigra. 



Long. -55 — -7. 

 Say J. A. N. S. 3, 420. 

 Leptura subpubescens, Kb. N. Z. 180, 

 Trigonarthris proximo, Hald. 65. 

 T. terminata, Dej. Cat. 



Lake Superior, Missouri Territory, Maine, and Pennsylvania : rare. 



The male is narrower and shaped like L. chrysocnma. This species with the next 

 constitutes Dejean's genus Trigonarthris. They only differ from other Leptura in 

 having the intermediate tarsi as broad and as short as the anterior pair. They are, 

 . however, more dilated in the males, and, moreover, are not alike in all Lepturce : for 

 these reasons I have thought it more natural to replace these species among the 

 genuine Leptura. 



