10 LE CONTE.— LONGICORN COLEOPTERA 



Group 5. 



The body in this group is elongate, sometimes slightly cuneiform, sometimes 

 subdepressed. The thorax is most commonly convex, either armed or unarmed, and 

 but little dilated on the sides. The palpi are short and more or less dilated, the 

 maxillary sometimes being a little longer than the labial. The mandibles are entire. 

 The legs are thin, the posterior pair frequently elongated. The mesosternum is not 

 at all gibbous. This group differs from the two following by its simple femora. It 

 leads directly to the Clyti. 



TRAGIDION, Strv. 



Mandibular obtusDs breves. 



Antennae filiformes 11-articulate (S sub 12-articulatjE) articulis 5 — 11 extus margine acuto. 



Thorax convexus, parum rotundatus, spicula parva armatis. 



Palpi breves, labiales brevissimi. 



Elytra apice haud armata : corpus valde pubescens. 



I know not what induced Serville to associate this genus with Clytus ; in every 

 respect it strongly resembles Purpiiricenus, and can be distinguished only by its 

 shorter palpi and thick pubescence, which covers the body both above and below ; 

 this pubescence is more dense in the female. 



1. T. coQuus. — Nigrum confertissime punctatum, pubescens, elytris subsulcatis, niacula utrinque magna 



auruntiaca ante medium : thorace minus distincte armato. Long. -9.3. _ 

 Cerambyx coquus, Lin : Fabr. 2, 300. 

 C. lynceus, Fabr. El. 2, 344, 01. 67, 14, 97. 

 C. Melskeimeri, Germ. Ins. i\ov., 502. 



Southern States, rare. 



2. T. FULViPENNE. — Nigrum confertissime punctatum, pubescens, elytris subsulcatis, auruntiacis, margine 



basali nigro ; thorace distinctius spinoso. Long. -8. 

 Callidium fulvipenne, Say. J. A. N. S., 3, 414. 



Were it not for the stronger armature of the thorax, this might be considered a 

 variety of T. coquus. It is found in Missouri and Louisiana. I have it from Dr. 

 Engleman and Mr. Wapler. 



PURPUmCENUS, Serv. 



MandibulsE acutae. 



AntennfB maris sub 12-articulata9, articulis 5 — 11 extus maro-ine acuto. 



Thorax convexus modice rotundatus spina breve armatus. 



Palpi breves, labialibus brevioribus. 



Elytra apice sub-truncata ; corpus vix pubescens. 



