116 
Latreille, and most probably of Fabricius : but we have 
placed a note of interrogation to the synonym of the last 
of these authors, because he describes the colour of the 
elytra by the term fusca, which will not accord well with 
our specimen. Yet his description in every other respect 
agrees with it; mentioning the serrated antennae, the 
dilated margin of the thorax, and the metallic hues that 
in certain lights glitter upon it : on this account we are 
pretty certain that ours can be nothing more than a variety 
of his insect. 
Body black. Head, excluding the neck, cordate, con- 
siderably narrower than the thorax, shining, without 
punctures, one or two excepted on each side between the 
eyes and the neck. Antennae recurved, a little longer than 
the head, hairy, black; with the last joint piceous i their 
three first joints are nearly obconical ; the seven following 
ones on their lower side jut out into an angle, forming so 
many serratures; the last is nearly ovate and acute. The 
thorax is naked, ’shining and black; but behind and on 
the sides, in certain lights, it reflects a greenish metallic 
hue; it is rounded, and widest behind, somewhat com- 
pressed before, and truncate with a sinus for the reception 
of the neck ; its disk is very convex, but its sides are de- 
pressed, dilated and flat; its surface is smooth, with about 
twenty-six impressed punctures, viz. eight disposed in two 
triangles on the disk, the acute angle of which is distin- 
guished by two approximate ones, and eighteen in the 
margin, thus disposed, beginning at the anterior angle, 
2 . 5 . 2 . 2 . 5 . 2 . The anterior tarsi are dilated, and fulvous 
underneath. The elytra are rather longer than the thorax, 
but not quite so wide, opaque, black, except the angle at 
the shoulders, which is distinguished by a ferruginous dot 
that is almost concealed by the thorax. The abdomen is 
shining and hairy. The anus is terminated by a rectilinear 
forceps, and two linear and very hairy appendages : these 
are all probably sexual distinctions. 
