APPENDIX. 273 



a slight groove at the base of each elytrum, tip black \feet 

 rufous; thighs clavate; venter dull rufous. 



Length more than one-twentieth of an inch. 



2. S. brevicornis. Blackish ; elytra bright rufous, black- 

 ish at tip ; antenna shorter than the thorax. 



Inhabits Pennsylvania. 



Body hairy ; head black ; antennss rather shorter than 

 the thorax, hairy, dull rufous; thorax polished, black: 

 elytra smooth, polished, impunctured, and without striae, 

 bright rufous ; hairs long ; humeral angles longitudinally 

 elevated ; a slight groove at the base of each elytrum,* tip 

 W^Lck-.feet rufous; thighs clavate, dusky at tip. 



Length rather more than one-twentieth of an inch. 



Strongly resembles the preceding, but the antennae are 

 much shorter and more robust, the thorax is destitute of 

 real or apparent impressed lines, and the clavse of the thighs 

 are more dilated. 



DORCATOMA, Herbst. 



D. oculata. Rounded-oval, blackish-brown, a little hairy ; 

 antennae yellowish-piceous. 



Inhabits Pennsylvania. 



Head very obscure piceous; a few short hairs ; antennaa 

 yellowish-piceous, first joint large, arcuated ; second joint 

 much smaller, rounded ; third, fourth, fifth, still smaller 

 and not very distinctly articulated ; sixth transverse, very 

 short; seventh much enlarged, on the inner side extending 

 into a conic process, which is nearly as long as the preceding 

 part of the antennae, and when at rest is applied closely to 

 the inner side of the eighth joint and extends quite to its 

 tip ; eighthjointelongate-obtriangular; ninth joint as long as 

 the preceding joint, a little arcuated ; eyes with an indented, 



