334 LE CONTE.— LONGICORN COLEOPTERA 



This genus is very close to the preceding, and only differs in the structure of the 

 antennae. These organs in the male are rather thick, with the sixth and following 

 joints compressed. Carinated on the edge, with a denuded granulated elliptical 

 impression of each side ; the eleventh joint is constricted in the middle and furnished 

 with two pairs of impressions. In the female the antennse are less compressed, the 

 side not carinated, the impressions are smaller than in the male, those on the external 

 surface being sometimes scarcely visible. The body is arched, and narrowed at each 

 end. 



A. Antennarum articulo 6'° impresso. 



1. T. ZEBRAT0S. — Niger, fulvo pubescens, thorace grosse confertim punctato, margine utrinque aureo 



villoso, lateribus vix rotundatls, elytris sat dense puiictatis, apice dehiscentibus intus emarginatis, fasciis 



4 flavis, basali arcuata ; pedibus rufis, tarsis nigris. Long. -4 — -55. 

 Leptura zebrata, Fabr. El. 2, 364. 

 L. zebra, 01. 73, 3, 33. 

 L. nitens ? Forster Cent. Ins. 45. 

 Stenura zebra, Hald. 62. 



New York to Georgia. Common. 



2. T. FUGAX. — Niger, dense fulvo-pubescens, thorace confertim subtilius punctato, lateribus parum 



rotundatis, elytris rufis sat dense punctatis apice dehiscentibus, intus emarginatis, rufis fasciis 4 flavis 

 plus minusve obsoletis, margine basali nigro, ano pedibusque rufis, tarsis fuscis. Long. -46. 



Leptura fugax, Fabr. El. 2, 359. 



L. velutina, 01. 73, 3, 32. 



In the male the abdomen is frequently entirely rufous. Found everywhere. 



3. T. LUNATUs. — Niger pubescens, thorace convexo, grossius foveatim punctato, margine postico aureo- 



piloso, elytris sat dense punctatis, apice paulo dehiscentibus, intus emarginatis, macula utrinque arcuata 



basali fulva, humeris relictis nigris. Long. '36. 

 Leptura lunata, Fabr. 2, 360. 

 Stenura lunata, Dej. Hald. 63. 

 Leptura arcuata, 01. 73, po. 46 : tab. 4, 47. 



Pennsylvania to Georgia. 



4. T. LUGUBRis. — Niger pubescens, thorace convexo, subtilius punctato, lateribus modice rotundatis, 



scutello argenteo-piloso, elytris confertim subtilius punctatis, apice dehiscentibus intus emarginatis. 



Long. -4. 

 Leptura lugubris, Say. J. Ac. 3, 419. 

 Stenura lugubris, Hald. 63. 



New York, Pennsylvania. 



