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. brevicomis. Blackish; elytra bright rufous, blackish at tip; antennae shorter than the thorax.
Inhabits Pennsylvania.
Body hairy; head black; antennas rather shorter than the thorax, hairy, dull rufous; thorax polished, black: elytra smooth, polished, impunctured, and without strias, bright rufous; hairs long; humeral angles longitudinally elevated; a slight groove at the base of each elytrum, tip black; feet rufous; thighs clavate, dusky at tip.
Length rather more than one-twentieth of an inch.
Strongly resembles the preceding, but the antennas 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; antennas yellowish-piceous.
Inhabits Pennsylvania.
Head very obscure piceous; a few short hairs ; antennx 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 antennas, and when at rest is applied closely to the inner side of the eighth joint and extends quite to its tip; eighth joint elongate-obtriangular; ninth joint as long as the preceding joint, a little arcuated; eyes with an indented,