192 REVISION OF THE BUPRESTIDA OF THE UNITED STATES. 
The figure of C. virginiensis given by Laporte and Gory, and cited above, represents 
very well this species, which is also considered by Dr. Fitch as being Drury’s: Herbst’s 
description makes mention of the fine sculpture of the elytral impressions, and of the acu- 
minate suture, characters not found in the one now under consideration, and which toge- 
ther with the obscure colour, fix the above mentioned No. 3, as the one described by him. 
b. Alytra margine pone medium fortiter serrato: thorax canaliculatus. 
6. OC. campestris. Buprestis campestris Say, Journ. Acad., 8, 165, Am. Ent. tab. 26. 
Buprestis substrigosa Lap. and Gory, 2, 13, tab. 3, fig. 10. 
Middle States and Western States rare: found according to Say on the Arkansas river. 
This species agrees very well with Say’s description, but very badly with the figure, 
which represents a smailer insect, with more distinct elytral costae and no impressions, 
though the latter are mentioned in the text. 
7. C. Langeri Chevrolat, Révue and Mag. Zool., 1854, tab. 6, fig. 1. 
Louisiana, near New Orleans. Though evidently very nearly related to the preceding, 
Iam induced to place this as distinct, on the authority of Mr. Chevrolat, who, having 
compared them, has kindly sent me the following notes: 
“The species which I refer to C. campestris (prionoptera De}.) is smaller, narrower, 
parallel, obscure above, dull metallic beneath, slightly pubescent, and with the punctures 
shallow and confluent: the elytra have four straight nervurés, and three median depres- 
sions: the groove of the thorax is deeper, strongly channeled, and on each side margined. 
In C. Langeri this channel is visible for only three-fourths the Jength, and presents a 
slight flattened elevation near the anterior margin: moreover, the thorax is nearly trian- 
gular, and the elytra are more dilated.” 
A specimen from Texas in the collection of Mr. H. Ulke, which I refer to this species 
is 1:3 unc. long; the thorax is angulated on the sides just before the middle, then narrowed 
to the apex;. the dorsal channel is shallow, and has a smooth medial line. In other-re- 
spects it agrees with C. campestris. 
“Psttoprera Sol. (emend. Lac.) 
Our species have the appearance somewhat of gigantic Dicercs, and are nearly related 
to the Mexican Buprestis Dr ummondi, Lap. & Gory; it is not indeed impossible that 
one of them may be identical with that species. 
The genus will be readily known by the very obtuse mandibles, the antennal pores 
visible only on the inferior margin, and the equal joints of the tarsi. On the lateral sur- 
faces of the 7th and following joints of the antenne is seen a deep elliptical fovea, on the 
