AMERICAN PHILOSOPHICAL SOCIETY. 619 



Body blackish piceous : elypeus transversely concave before : 

 thorax rather short and wide ; dorsal groove much dilated, the top 

 of its lateral elevations being equidistant from the middle of the ex- 

 terior edge ; exterior edge arcuated, not undulated ; lateral mar- 

 gin broadly depressed ; posterior angles rather broad, extending 

 outwards and backwards, their exterior edge rectilinear to the 

 tip : elytra with elevated, obtuse lines at base, one of which is 

 obliquely elongated and is obsolete behind the -middle : tarsal 

 groove of the pectus none. 



Length three-fifths of an inch. 



For this species I am indebted to Dr. Harris. It is as large as 

 marmoratus F., and operctdatus S., to the latter of which it ap- 

 proaches in being destitute of the tarsal grooves of the pectus, 

 and in the short wide thorax ; but it differs from it in the more 

 regular arcuation of the lateral edge of the thorax, the exterior 

 edge of the posterior angles [ 182 ] being rectilinear, and in the 

 crimped appearance of the base of the elytra, &c. 



60. E. DiscoiDEUS Weber.* — Remarkable by the golden hairy 

 head and sides of the thorax. This is the j^e^matus Fabr. ; but 

 Weber's name has the priority, and must therefore be adopted. 



61. E. LEPTURUS. Blackish; spines acute; elytra with ap- 

 proximated series of punctures. 



Inhabits United States, Pennsylvania, Indiana, and North 

 Carolina. Harris. 



Body black-brown, punctured, rather slender : elypeus concave, 

 truncate at tip, and emarginate each side at the insertion of the 

 autennse : antennfB rufous, serrate; second joint not half the length 

 of the third : thorax with a dorsal, slightly indented line; lateral 

 edge not arcuated ; a Httle narrowed before, and contracted at 

 the spines ; spines excurved, acute : scutel rounded behind : ely- 

 tra with approximate series of deep punctures, with an appear- 

 ance of striiB, the series alternately larger : pectus, tarsal grooves 

 obvious. 



* " Observationes Entomologicse." This work, which was presented 

 to me by Professor Wiedemann, was published in the same year with the 

 Syst. Eleut. ; but, as Fabricius quotes Weber's work, the priority of the 

 latter is evident. 

 1836.] 



