160 LE CONTE.— LONGICORN COLEOPTERA 



The elytra are always truncate, with the angles subacute. The eyes are not 

 entire, (Serville, Am. Ent. Fr. 4,) but deeply emarginate, (Muls. 155.) 



1. P. PENiCELiiATUS, piceus, dense cinereo-pubescens, fusco-variegatus, elytris grosse punctatis, lineis 



tribus elevatis, interna obtusiore penicellis nigro-hirsutis ornata, fascia late subbasali albo-pubescente, 

 antennis cinereo-anulatis. Long. -27. 

 Le Conte. Agassiz Lake Superior, 234. 



North side of Lake Superior ; the discoidal tubercles of the thorax are large, the 

 surface (when the hair is removed) punctulate, marked with sparse large punc- 

 tures, and a posterior smooth callus. 



2. P. MiXTUS, niger, parce pubesccns, pilis brevibus erectis nigris paree vestitus, thorace parce punctate, 



elytris testaceo-variegatis, grosse confertim punctatis, fascia ante medium albo-pubescente, maculisque 

 sparsis oclireo-pubescentibus ; antennis testaceo-annulatis. Long. -24. 

 Hald. 50. 



Pennsylvania, New York and Lake Superior; the male has the thorax finely 



3. P. PARVULUS, piceus, parce-pubescens, thorace tuberculis discoidalibus vix prominulis, elytris testaceis, 

 fusco-nebulosis, ad medium late fuscis, antice densius cinereo-pubescentibus, lineis tribus sub-elevatis, 

 interstitiis irregulariter biseriatim punctatis, antennis testaceis fusco-annulatis. Long. -IS. 



One specimen from near the head of the Mississippi, and another from Missouri 

 Territory ; the thorax of the male is finely rugous, that of the female is smooth, 



ECYRUS. 



Antennas valde pilosas, articulo 1""° clavato. 



Tibiae anticse ad apicem subito incrassatae. 



Thorax cylindricus, non armatus. 



Femora clavata. 



Vortex inter oculos impressus. , 



The body is short and stout ; the elytra truncate at tip, with the angles not acute ; 

 the antennae are much more hairy than in Pogonocherus. 



1. E. DASYCERUS, fuscus, dense cinereo-pubescens, thorace parce punctato, elytris grosse punctatis, punctis 

 internis subseriatis fusco-nebulosis, lineis tribus subelevatis obscuris breviter penicellatis, fasciaque 

 angusta subbasali ornatis, apice truncatis, antennis annulatis. Long. '25 — "35. 

 Lamia dasycerus Say. Journ. Ac. Nat. Sc. 5, 270. 

 Exocenfriis dasi/ccrus Hald. 50. 

 Exocentrus obscurus Hald. 50. 



Middle and Southern States. Exocentrus is described as having a spine on the 

 side of the thorax. By the kindness of Mr. Ziegler I now possess the original of 

 Haldeman's Ex. obscurus, and can find no good character for separating it from the 

 present species. Dark colored varieties occur both of large and small size. 



