| OCR Text |
Show 80 son west of the Green River Crossing, Wyoming Territory. They resemble A. ochraceus Melsh, in general appearance. The head is nearly as broad as the thorax and well rounded; the eyes are about circular, . llmm in diameter; the mandibles are stout, about twice as long as their breadth at base, tapering but slightly; the labium is narrow. The pro-thorax is about twice as broad as long, smooth, the front border slightly concave above, rather strongly concave below, the sides gently and regularly convex, the anterior angles rectangular, the posterior less prominent, the hind border broadly convex. The prosteraum and the other stomal portions of the thorax seem to be delicately granulose; the middle coxae are about equidistant from the others, or perhaps slightly closer to the hind pair, and the fore coxae are more closely approximated to each other than the others, being separated by less than their own width. The scutellum is small, scarcely longer than broad. The elytra are smooth, equal, tapering only near the tip, the extremity of each independently and roundly pointed. Length, 3.2m, n; breadth, 1.65mra; breadth of head, 1.05-; of pro thorax, l, 53rom; length of same, .75mm; of elytra, 2.1mm; breadth of same, Qmin 10. Plienolia incapax.- Represented only by a single specimen and its reverse from the Green River shales ( Richardson), showing the under surf nee of the body, from which the# appendages have been torn. It closely resembles, in size, form, and the relation of the parts, P. grom ( Fabr.), but differs from it in the character of the under surface of the body, which, in the fossil species, is very minutely and very faintly punc-tulate, and the posterior edges of the segments are not raised. Length of fragment, 5.5n, m; of abdomen, 2.3u, ro; breadth of same, 3"*. 11. Chrysobothris Haydeni.- A single specimen, rather poorly preserved and obliquely crushed, was obtained by the United States Geological Survey of the Territories at Oastello's Ranch, South Park, Colorado ( No. 1722). While it is unquestionably a Buprestid, I place this species in Chrysobothris with some hesitancy. The shortness of the broad- tipped elytra, the rotundity of the eyes, and the comparatively slender fore femora separate it from the species of that genus which I have examined. The head is large, full, well rounded; the eyes moderately large, nearly circular; the prothorax is rather short, arched a little, minutely and shallowly puiictulate. The elytra reach to the base of the penultimate abdominal segment, and, as exhibited on the stone, are as broad at tip as at base; the apex in any case is broad, broadly rounded or almost docked; there is no appearance of punctures, although there seem to be three or four faint equidistant longitudiual ridges. The legs are slender and the fore femora resemble the others. Length of insect, 15.75mm; of prothorax, 3.75n, m; of . elytra, 10**; width of last at tip, 2.6 ™ °'; length of tore femora, 3.25ram; " breadth of same, ,56mm; length of hind femora, 3.25m, n; breadth of same, 0.4Gm, D. 12. Epipluxnis deletus.- A single specimen waa brought from Fossil Canon, White River, by Professor Denton. On account of the structure of the antennae and general resemblance of the insect to Epiphanis cornutus Eschsch, 1 have placed it iii the same genus; but the form of the prothorax differs somewhat in the two species. The head is moderately large, subquadrate, the a u ten use moniliiorm, corajwsed of twelve ( preserved) equal joints. The thorax is nearly quadrate with straight sides, the front lateral angles rectangular, the front border straight or scarcely coucave, the hind bonier slightly angulate; the elytra are slender and taper from the middle backward; they are too poorly preserved to show the markings. |
