570 PROCEEDINGS OF THE ACADEMY OF 



of the Allegheny ridge, which traverses that section. The species may be 

 easily distinguished from any other of this genus, by its four striate elytra, 

 the species previously described have their elytra ten or eleven striate. 



ARHOPALUS, Serv. 



A. Wilsonii . Brown, head large, eyes and tip of mandibles black ; an- 

 tennae long, equalling, in males, one and a half times the length of the insect ; 

 thorax spheroidal, faintly margined anteriorly and posteriorly with yellow ; 

 elytra each with a short basal band of yellow, which does not extend com- 

 pletely over the humerus, an oblique yellow band a little before the middle, 

 which widens as it passes outwardly, with a marginal and a faint sutural ex- 

 tension of the same towards the base of the elytra ; femora slightly clavate ; 

 posterior tibiae much flattened, curved, and blackish towards the tips ; tarsi 

 testaceous, claws black. 



Length, -75. 



Plate 8, fig. 4. 



Two specimens. Comal county, Texas. It affords me pleasure to dedicate 

 this beautiful species to my friend, Dr. Thomas B. Wilson, whose labors for ento- 

 mological science I endeavor to acknowledge. 



CLYTUS, Fabr. 



C. n it i d u s . Black, antennae short, head large, with two vertical yellow 

 lines ; thorax spheroidal, margined anteriorly and posteriorly with yellow, at 

 the posterior third are four short yellow bands in one transverse row ; elytra 

 with four yellow bands, the third and fourth transverse, the latter terminal, 

 the anterior two bands oblique, and united by a sutural stripe; an obsolete 

 patch of yellow near the humerus ; incisures margined with yellow ; sides of 

 pectus yellow; legs rufous, hairy; posterior pair elongate; femora clavate, 

 covered with minute cinereous hairs, and blackish towards the tips ; posterior 

 femora not spinous. 



Length, -42 -50. 



Plate 8, fig. 2. 



Only two specimens have been examined. It may be worthy of notice that 

 these were obtained from widely separated localities. The specimen in the 

 Society's cabinet was taken in Comal county, Texas, while that in the collec- 

 tion of Mr. George Newman was obtained in Gloucester county, N. J. They 

 have been several times compared, and have been found to differ only in size, 

 the Texas specimen being the larger. 



LEPTURA, Linn. 



L. a u r a t a . Yellowish ; eyes black ; labrum sometimes of a metallic 

 green color ; head and thorax rufous, the latter somewhat globular, much con- 

 tracted anteriorly and slightly posteriorly ; elytra yellowish, clothed with short 

 golden hairs, densely punctured, slightly narrowed posteriorly, with a lateral 

 and a sutural stripe on each, extending over three-fourths of the length of the 

 elytra. The lateral stripe is sometimes broad and clavate ; legs yellowish ; 

 femora more or less clavate. 



Length, -32 -34. 



Plate 8, fig. 5. 



Allegheny Ridge, Western Virginia. Abundant. The male of this species 

 is much smaller than the female, more slender in form, and elytra much more 

 narrowed toward the apex, and the lateral and sutural stripes not so broad. 



L. nitidicollis. Black; first joint of the antennas brown; mandibles 

 and palpi yellowish, with the tip of the former and last joint of the latter 

 blackish ; head and thorax glossy, the latter narrowed in front, obtusely 



[Dec. 



