. The fossil insects of North America, with notes on some European species [microform]. Insects, Fossil; Insects; Insectes fossiles; Insectes. ORTIIOPTE R AâliOC USTARI^. 229 â slightly longer than the hind femora, and the latter scarcely extending beyond the abdomen. Ovipositor long, broad, saber-shaped, a little up- curved. This is one of the largest Tertiary Locustariae known, if not the largest. LiTHVMNETES GUTTATU8. PI. 17, Figs. 14, 16. Lithymnetea guttalut Ball. U. S. Geol. Oeogr. Surv. Terr., IV, 533-534 (1878). This is the largest insect I have seen from the Tertiary shales of
. The fossil insects of North America, with notes on some European species [microform]. Insects, Fossil; Insects; Insectes fossiles; Insectes. ORTIIOPTE R AâliOC USTARI^. 229 â slightly longer than the hind femora, and the latter scarcely extending beyond the abdomen. Ovipositor long, broad, saber-shaped, a little up- curved. This is one of the largest Tertiary Locustariae known, if not the largest. LiTHVMNETES GUTTATU8. PI. 17, Figs. 14, 16. Lithymnetea guttalut Ball. U. S. Geol. Oeogr. Surv. Terr., IV, 533-534 (1878). This is the largest insect I have seen from the Tertiary shales of Flor- issant, and is remarkable for the markings of the tegmina, which are covered throughout (with the possible exception of the anal area and the extreme base of the wing, which are obscure) with minute, circular, equidistant, pale spots, situated between the nervules; they have a mean diameter of half a millimeter, and a mean distance apart of one and a half millimeters. The head is full and regularly rounded on a side view, with no prominences. The antennsE appear to have the usual structure, but the second joint is small, and the thickness of the joints above the front of the prothorax is ;"", already diminishing to O-S"" at the posterior border of the same; they are broken shortly beyond this point, so that t'leir length can not be determined. The mean diameter of the eyes is scarcely more tlian one-third the shortest length of the genae. The costal margin of the tegmina is gently convex, with a regular curve throughout, or until close to the tip; the inner margin has a similar tliough slighter convexity ; the principal branch of the externomedian vein passes through the middle of the wing. The legs are all slender, the hind femora very slight, but little incrassated toward the base, the hind tibiae slender, equal throughout, armed at tip with a pair of small, moderately stout, black-tipped spurs, the hind tarsi about two-fifths the length
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectinsects
