OF THE COLEOPTBRA LONGICORNIA OF THE UNITED STATES. 33 



i le each side before the middle, in contact with a small tuft anterior to it; two or three tufts towards the posterior 

 ancles: scutel concave, clothed with Savons hair: elytra will] rather fine, dilated, impressed punctures, and small, 

 irregularly scattered lofts over the entire surface 



Allied to vicinum and nebulosum, 



26. EL TRUNCATUM. 



Robust; reddish-brown, thickly and finely sprinkled with tufts of whitish hair; elytra short, subparallel, tnutic, 

 and slightly truncate at tip. 



6'" long; I i wide. Cab. Melsheimer. 



Mandibles black, palpi rufous, post-clypeus with whitish hair extending in a narrow line to the inner base of 

 the antrnna- ; frontal line obsolete; antenna' yellowish-brown, shoitcr than the body, third, fourth, and fifth articu- 

 lations slightly armed: a conspicuous whitish dot at the anterior edge of the pronotum, and a single one upon the 

 middle of each side; dorsal facet very Bhort, widest posteriorly: elytra very slightly truncated, and having a minute 

 snlnral spine. 



Intermediate between aspersum and villosum. 



27. E. MfRlCATt'.M. 



Reddish-brown-, very slightly dotted; head large, spines of the antenna; very large, that of the third articulation 

 nearly equalling the foutlh articulation in length. 



6'" long; li wide. Carolina, Massachusetts. — Ilentz. 



Stcnocorus muriaticus? Say. Hrntz. Boston Coll., 5G2. Antennae. with three or four of the articulations 

 armed : prothorax as wide as long, dorsal line smooth, with two indistinct tubercles on each side: elytra mucronatc. 



Characterized from a very imperfect specimen received from Professor Hcntz, with the 

 above name and reference. Not having noticed the trivial name among Say's papers, it 

 is possible that the citation was made from memory, with mucronatus in view. It may 

 eventually prove to be Say's rigidus. 



28. EL VICINTJM. 



Reddish-brown, femora niutic, spines of the third, fourth, fifth and sixth articulations of the antenna; very short. 



9"' long; 2J wide. Inhabits Pennsylvania. 



Mandibles and eyes black; antennre hairy; front concave; a tuft of hair between the eyes, and extending along 

 the orbits above: prothorax transverse, a small yellowish spot of hair laterally, numerous dilated punctures above; 

 dorsal line a wide, smooth ridge slightly bi-abbreviated, widest posteriorly, and narrowed in the middle, so as to 

 be almost interrupted; four facets above arranged in a quadrangle, two small circular ones before the middle, and 

 two short, linear, longitudinal ones slightly converging backwards to the posterior margin: scutel yellowish, with 

 dense hair: elytra subparallel, with small scattered tufts of yellowish hair, and numerous dilated impressed punc- 

 tures, arranged in tolerably regular scries, and becoming obsolete on the apical third; apes separately emarginate 

 and bi-spinose, exterior spine longest. 



Allied to mucronaium, but the external, apical angles of the elytra are more suddenly 

 rounded, the femora mutic, and the antennas tinned with touch smaller spines. It is a 

 rather robusl Bpecies, with a large prothorax. 



29. E. mi ■< :;"%- a mi.Xiii/. Journ. Acad. N.Sc., iii.427. E. nebulosum, Dej. Mels.< at., 750. 



Antenna' robust, three — four spincd, first spine two-thirds the length of the following articulation: elytra taper- 

 ina rather rapidly towards the tip: femora hi-mucronalc at tip. 

 T" long; 2 wide. Inhabits Pennsylvania. 

 VOL. X. 9 



