OF AMERICA NORTH OF MEXICO. 23 



This genus has very much the appearance of Elaphidium, but differs in having 

 stongly clavate femora. 



1. T. DiMACuLATus. — Fuscus, parce cinereo-pubescens; thorace dense subtilius scabroso, linea dorsali 

 calloque utrinque ante medium rotundo laevigatis ; elytris sat grosse punctatis, macula parva utrinque 

 ante medium alteraque versus apicem pallidis; femorum clava pallida; abdomine testaceo. Long. -Qb- 



For the only specimen of this species ever found, I am indebted to my friend Mr. 

 Haldeman. It inhabits Pennsylvania. 



IBIDION. 



Antennoe longiuscula, tenues, 11-articuIatae, glabrae. 

 Caput thorace latius, oculis magnis extantibus. 

 Thorax cylindricus, valde elongatus. _ 

 Palpi labiales mediocres. 

 Elytra apice rotundata. 



The body is cylindrical and very much elongated, the United States species 

 (forming Newman's Heterachthes,) have the third and sixth joints of the antennse 

 thickened in the males. 



1. T. 4-MACULATuM. — Piceum,pernitidum, punctis parcis piliferis, thorace medio sub-calloso ; elytris versus 



apicem indeterminate testaceis basi maculis utrinque 2 flavis. Long. -3 — •■iS. 

 V'ariat rufo-testaceum, elytris macula utrinque ante medium flava. 

 Heterachthes i-maculaivs, Hald. 



Pennsylvania and Missouri. 



2. I. EBENUM. — Nigrum opacum, obsoletius punctatum, brevissime cinereo-pubescens; thorace linea obsoleta 



Iffivi. Long. •42. 

 The femora in this species are much less incrassated than in the preceding. 

 Heterachthes ebenus, Newman. 



Georgia and South Carolina. 



DRYOBIUS. 



Antennse elongatae, pilis elongatis dense ciliat<E, 11-articulata?. 



Thorax capite non angustior, depressiusculus, lateribus paulo rotundatus dorso callosus. 



Palpi labiales mediocres. 



Elytra apice truncata. 



The body is linear and depressed in my specimen, the femoral club is very much 

 compressed, but this is probably a deformity. 



1. D. 6-FASciATUs. — Supra nigra nitida, capite postice thorace flavo-pubescentlbus, hoc punctato utrinque 

 transversim impresso, fascia ad medium lata glabra, callis 3 losvibus; elytris parce punctatis postice 

 JcEvigatis, scutello fasciisque 4 ultima apicali flavis tomentosis antennis pedibusque rufis. Long. -65. 

 Callidium 6-fascialum, Say. 



Alabama, Haldeman. Say's specimen came from Arkansas. 



