DESCRIPTIONS OF NEW SPECIES OF XOKTH AMERICAN 

 COLEOPTERA IN THE FAMILIES CERAMBYCID.E AND 

 SCARAB.EID.E. 



By Martin L. Linell, 



Aid, Department of Insects. 



While incorporating recent accessions in tlie collection of North 

 American CeranibycitLe in the United States National Museum, sev- 

 eral undescribed species were met with. For one of these, a small 

 species from southern Texas with remarkable antennal structure, it 

 was found necessary to erect a new genus. Two new species of Scar- 

 abieida^ are also described. 



ELAPHIDION ALBOFASCIATUM, new species. 



Cylindrical, robust, uniformly black, shining, sparsely clothed with 

 rather long, mostly appressed, grayish white hairs, condensed on the 

 middle of elytra to a straight transverse fascia. Antenuic without 

 spines, piceous brown, very stout, shorter than the body in both sexes; 

 tirst joint thick, clavate, a little longer than third; fourth shorter than 

 third; hfth to eleventh subecpuil in length; third and fourth strongly, 

 tifth slightly campanulate at apex; fifth to eleventh tlattened, suban- 

 gulate internally at apex. Palpi subequal; last joint triangular, 

 obliquely truncate. Thorax slightly longer than broad, cylindrical, 

 broadly but not strongly constricted at base, hardly constricted at 

 apex; disk coarsely, moderately densely punctate with a shining cal- 

 losity, more or less diamond-shaped, at middle and an obsolete tuber- 

 cle at the sides behind the middle. Scutellum transverse, r(Hinded, 

 densely hairy. Elytra parallel, truncate at base, conjointly rounded at 

 apex without spines, coarsely but not very densely punctate at base, 

 abrnptly more finely punctate behind the anterior margin of the white 

 band and gradually smoother toward apex. The longer white hairs 

 forming the band sometimes continue to apex, but generally the band 

 is very distinct. Ventral surface more shining, moderately punctate; 

 abdomen finely punctulate. Sixth ventral segn^ent exposed, in the male 

 corneus, deeply concave with margin rounded, in the female membranous, 

 truncate. Legs short, moderately stout, coarsely and densely punctate. 



Proceedings U. S. National Museum, Vol. XIX-No. 1113. 



