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Show 70 INS.E!CTA. The same character is presented in the genus N YMrHES, Leach, Established on certain Insects from New Holland; but here the antennre are filiform and shorter( 1 ). In the others the first segment of the thorax is large~ and the wings are ]aid horizontaUy on the body ; t?e p~lpt are filiform, and the last joint is conical.or almost cylmdrical, and frequently shorter than the precedmg one. The larvre are aquatic. . Fabricius unites them with the species of the genus Perla of Geoffroy, but which are removed from .them by the num· her of joints in their tarsi, under the genertc name of SEMBLis, Fab. Which is composed of the following subgenera. CoRYDALIS, Lat. Distinguished by the mandibles of the male which are very large and resemble horns(2). CHAULIODEs, Lat. Where the antennre are pectinated(3). SIAus, Lat. Where the mandibles are moderate, as in the latter, and the an· tennre simple as in Corydalis, and distinguished from the two pre· ceding ones by the tectiform disposition of the wings. To this sub· genus belongs the (1) Nympltea myrmeleonide4, Leach, Zool. Miscell., xlv. Perhaps it may have six p:\lpi, and in that case it belongs to the preceding division. (2) Lat., Gen. Crust. et Insect., III, p. 199. (3) Ibid., p. 198. NEUROPTERA. 71 8. lutarius; Hemerobius lutarius, L.; Rres., Insect., II, Class II, Insect. Aquat., xiii. Dead-black; light-brown wings thickly intersected with black nervures. The female produces a prodigious number of eggs, which terminate abruptly in a little point, on the leaves of plants or on other bodies situated near water. The ova are implanted close together, perpendicularly and symmetrically, and form large brown plates. The larva inhabits the water, in which it runs and swims with great swiftness. The sides of its abdomen, like those of the Ephemerre, are provided with pseudo-branchire, and its last ring is elongated into a kind of tail, but it is metamorphosed into an immovable nymph. 4. A fourth division, that of the TERi\HTINJE, wi1l comprise N europtera subject to a semi-metamorphosis. They are all terrestrial, active, carnivorous, or gnawers, in all their states. With the exception of the Mantispre, very distinct from all the Insects of this order, by the form of their anterior legs, which resemble those of a Mantis, the tarsi consist of four joints at most, which removes them from the preceding genera of the same family. The mandibles are always corneous and strong. The inferior wings are nearly as large as the superior ones, and without folds, or smaller. Some have from five to three joints in the tarsi, and very distinct and salient labial palpi. Their antennre are generally composed of more than ten joints, the prothorax is large, and the wings are equal and multireticulated. MANTISPA, Illig.-Rhaphidia, Scop. Lin.-.lJ!lantis, Fab. Pall. Oliv. Where there are five joints to all the tarsi, and the two first legs are formed like those of a Mantis or adapted for prehension. The antennre of these Insects are very short and granose, and their eyes large. The prothorax is very long, and thickened anteriorly, and the wings are tectiform( 1 ). (1) Lat., Gen. Crust. ct Insect., III, 93. |