AMERICAN PniLOSOrniCAL SOCIETY. 019 



Body blackish piceous : clypcus transversely concave Leforc : 

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

 of its lateral elevations being e<|uidistant 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 obliquely elongated and is obsolete behind the middle : tarsal 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-tifths of an inch. 



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

 marmorutm F., and ojh rcuhdis 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. 



no. F. DTSCOlTtKUS Weber.* — Komarkable by the gulden hairy 

 head and sides of the thorax. This is the pcniinfits Fabr. ; but 

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



CI. F. i.KrTURUS. Blackish; spines acute; elytra with ap- 

 proximated series of punctures. 



Inhabits United States, Pennsylvania, Indiana, and North 

 Carolina. TTarris. 



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

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

 antennae : antonn?c rufous, serrate; second joint not half the length 

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

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

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

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

 ance of stria), tlie series alternately larger : pectus, tarsal grooves 

 obvious. 



- * " Observationes EntomolopicT." This work, which was prosonted 

 to me hy Profes.^or Wiedemann, was published in the same vear with the 

 Syst. Elout. ; but, as Fabricius quotes Weber's work, the prioritj of the 

 latter is evident. 

 1836.] 



