16 LE CONTE.— LONGICOEN COLEOPTERA 



20. E. BiDENs. — 'Thorace inermi, subtuberculato, antennarum articulis bispinosis, corporet tesaceo.' 

 Stenocorus bidens, Fabr. El. 2, 306. 



Cerambyx bidens, 01. 67, 17, 125. 



Fabricius gives it as South American. Germar says it is also found in the United 

 States, and that E. muricatum, Hentz, is a synonym. The specimen, however, 

 >rhich is described by Haldeman under that name, (1. c. 33) I knovir by actual 

 inspection to be a badly preserved E. mucronatum. 



21. E. Newmanii. — 'Fusco-ferrugineum, punctatum.lanuginecinereasparsim tectum, antennas corpore valde 

 longiores, articulis 3 — 5 apice 1-spinosis, elytra truncata, utroque angulo spina distincta armato, meso- 

 et meta-femorum apices spina brevi interna armati.' Long. 1 unc. 



Hald. Ap. 375. 



FAaphidion bidens, Nm. Entom. 



Very different from the true E. bidens. 



22. E. ARCTUM. — ' Ferrugineo fuscum, punctatum, piliscanis obsitum, antennae corpore breviores, anticulis 

 310 et 410 apice 1-spinosis, spina 4'' minutissima, thorax convexus, elytra linearia apice truncata, 

 angulis spinosis, spina externa majore. Long. 'SS. 



Nm. Ent. Mag, 



The thorax has not smooth spots. There is nothing in the description which 

 prevents us from regarding this as a small specimen of E. villosum. 



23. E. PUBESCENS. — 'Pale yellowish brown robust, subcylindric, elytra nearly parallel, entire at tip. Long. 

 7 lin. lat. 2.' 



Anoplium pubescens, Hald. 34<. 



Pennsylvania. Mus. Melsheimer. The pubescence is uniform, the antenna?, 

 elytra and feet unarmed. 



24. E. E.IGIDUM. — Ferrugineum, antennis robustis subtus spinosis corpore longioribus, elytris pallidioribus 

 estriatis et impunctatis depressioribus levibus pilis brevissimis instructis. Long. •6. 



Say 1. c. Stenocorus. 



ARHOPALUS, Serv. 



Mandibulge acutse. 



Antennae ll-articulatae. 



Thorax rotundatus, vel subdepressis, vel convexus baud armatus. 



Elytra apice baud armata. 



Palpi sequales modici dilatati. 



Tarsi postici articulo primo elongato, reliquis conjunctis. 



The type of this genus, as made by Serville, is Clijtus fulminans. I have 

 extended it so as to embrace all the large yellow and black Clyti with the thio-hs not 



