620 TRANSACTIONS OF THE 



Length two-fifths of an inch. 



Resembles discoideus Weber, but is always destitute of the 

 golden hair of the head and thorax. It is the lepturus of Mel- 

 sheimer's Catalogue. 



[An Adelocera, but does not differ from A. impressicollis. — 

 Leg.] 



62. E. IMPRESSICOLLIS S., Ann. Lye. N. Y. i., p. 260. — Re- 

 sembles lepturus S. ; but may be distinguished by its ferruginous 

 color. 



63. E. RECTANGULARis S. Ann. Lye. N. Y. i. p. 260.— The 

 posterior angles of the thorax are rectangular, and the antennae 

 remarkably short.^ 



[Belongs to Lacon. — Lec] 



64. E. AviTUS. — Blackish; rather long; scales yellow and 

 black ; spines acute, hardly exeurved. 



Inhabits Indiana. 



Body black, with a slight tinge of piceous, punctured ; scales 

 intermixed, black and bright yellow ; rather slender : clypeus 

 hardly elevated before ; anterior edge very obtusely arcuated, a 

 little concave; antennas serrate, rufous; second joint small, sub- 

 globular, thorax with an obtusely indented line behind the mid- 

 dle ; lateral edge very slightly arcuated, and slightly exeurved 

 at the spines ; spines very slightly exeurved, acute, not carinated ' 

 scutel concave, rounded behind; elytra [183] with hardly percep- 

 tible, raised lines : punctures profound, densely and irregularly 

 set : feet piceous : pectus, tarsal grooves none. 



Length eleven-twentieths of an inch. 



Smaller than E. marmoratus F., and more slender, with a 

 more equal thorax ; larger than E. lepiin-us S., discoideus Weber? 

 impressicollis S., and rectangidaris S., and the punctures of the 

 elytra are not in regular series. It seems to approach nearer to 

 E. opercidatus S., but the elytra are more obtuse at tip, and have 

 much more profound, large, and close set punctures. I have not 

 now an entire specimen of the latter species, and therefore can- 

 not compare with the anterior part of the body. 



[A species oi Adelocera. — Lec] 



[Vol. YI. 



